I don't see the Republicans getting my vote back in the next twenty years. Americans aren't really that fed up with Democrats, per se, they're fed up with the status quo. Perhaps I'm not reading the tea leaves correctly, but having a democratic system is better than having an intellectual wing of one party that doesn't advocate for democracy anymore. That should be enough for your average voter to not vote Republican.
Consider anyone who joined the United States military in 2020 and has designs to spend a full 20 year career there or slightly a little more than that had to watch what happened in Afghanistan. ( We are talking FIVE full general voting cycles)
What incentive does that person have to vote for the Democratic Party?
Americans were born and raised and soaked in the ideal of victory. Internally against other Americans on our soil that concept doesn't always hold, but against the rest of the entire world, it's what everyone has seen in movies and TV and our books and in our music and in nearly every aspect of our culture. This is why Vietnam was such a massive stain and an issue for shame for so many Americans at the time and place, amongst other critical reasons.
What is the "degree of separation" i.e. the Kevin Bacon Scenario to a US military service member? How many Americans were once part of the military? How many have family in the military even if they didn't serve themselves? How many are married or were married to servicemen? This also extends to law enforcement. Defund The Police and the widespread pattern of attack against civilian law enforcement in this country is moving from only one clear direction. How many of them are apt to vote for the Democratic Party? Maybe some did before, but will they now?
The establishment Democrats have held onto the LGBT vote. They'll hold zealots and single issue voters. They've lost ground nearly everywhere else. And if they don't lose to the GOP, they risk threats in the primaries from AOC and her merry band of Progressives. It's a two front war that Obama and Pelosi self inflicted with their catastrophic handling of Sanders and The Squad.
Suburban women. Hispanic/Latinos. Asians. Small business owners and their families. And the now enraged growing juggernaut that is poor white rural Christian America. The list goes on and on.
2022 Mid Terms will be a blood bath. The 2024 general cycle is one where Team Blue would need a Music City Miracle to find a way to pull that one out.
The "average voter" will
1) Vote Republican because they are part of the cross section that is Conservative and/or Republican
or
2) Vote against this disaster zone of an administration, which means in a "First Past The Post" system, they will be voting for the GOP by default
or
3) Just not vote at all ( But that number from the side of the Democratic Party will swell. Even if some hate the GOP, many won't be able to abide by the woke insanity of the left and will just abstain out of disgust)
The Obama/Biden/Harris/Rice regime makes America look like a bunch of losers. It makes a lot of Americans feel like losers. And Susan Rice, who has shadow run this country into the ground, is forcing Jen Psaki to go out there and say day after day that the real problem is that Americans are too stupid to see what is really going on. Or that they are too unenlightened to really understand what's important. Or imply that they aren't pure enough.
Here is one of the major rules of effective media optics -
YOU CAN'T KEEP TELLING THE AMERICAN PEOPLE SOMETHING DIFFERENT THAN WHAT THEY ARE SEEING WITH THEIR OWN TWO EYES.
Establishment Democrats are doing so and are refusing to take any other approach. It's arrogant, it's tone deaf, it's smug, it's condescending, it tells people they are serfs in a new age feudal system, it says the average person should be thankful that their children are nothing more than cannon fodder.
Some people hate the GOP ( you seem to align in this range),
but most of the moderates, independents and undecideds will vote in line with what looks like the best chance for their children to have some kind of functional future. In the NFL, you just need one more point on the board than the other team to win as time expires. You seem to be stuck in this loop that since the score won't be 100-0, that it means the team that is clearly outgunned still has some kind of chance. Do you think most moderates, independents and undecideds are going to line up with your stance?
Let me spoil the end of the movie for you, they won't.
Your theoretical assessment doesn't account for the reality that people love their children and want their children to be safe more than they will hold onto some personal political ideology.