1. There are like 4 progressive members of Congress. Compare this to how many Republicans openly support QAnon conspiracies and other right-wing positions;
2. Anywhere else in the world, the Democrats would be a center-right party;
3. The Democratic Party actually hates progressives and goes out of its way to rid the party of them. Look at the hit job on Bernie Sanders in 2016. Look at the recent primary in the Texas-28 where Nancy Pelosi and Clyburn went to campaign for Henry Cuellar, who is pro-gun and the only anti-choice Democrat remaining in the House over Cisneros, an actual progressive;
4. Based on leaks there's a high likelihood the Supreme Court will overturn Roe v. Wade, pushing back 50 years of progress;
5. IN 2008 (in Heller) the Supreme Court for the first time recognized the Second Amendment as an individual right;
6. The Roberts Supreme Court also decided money is speech, which has openeed the floodgates for primarily conservative PACs;
7. The same court gutted the Civil Rights Act in terms of voter protection, which has led to a wave of anti-voter measures in red states;
8. Primarily red state has gerrymandered the hell out of states. For example, in Wisconsin, the GOP holds a super-majority despite getting 10% less of the vote;
9. Despite numerous incidents of easy access to firearms leading to the mass murder of school children multiple times there is not (and will not be) any meaningful restriction on access to mass murder machines (aka assault rifles);
10. Obamacare, pretty much the only lasting achievement of the Obama era, has largely been gutted;
11. Trump's tax cuts despite a Democrat in the White House and Democratic control of the House and Senate remain largely in place; and
12. As soon as the Supreme Court overturns Roe v. Wade, they'll probably next come for gay marriage.
This is just off the top of my head. So how exactly has the left gone off the "deep end" exactly?
There's really only been progress on two issues:
1. Gay marriage was legalized (but, as noted, that's at risk of being reversed); and
2. There have been advancements in trans rights.
This I think is the crux of the matter when people talk about the "far left". They really mean they hate trans people and want them to go away.
Conservatives are sore winners but great propagandists as evidenced by the fact that this myth that conservatives are "losing" perpetuates at all.
[1]: https://twitter.com/elonmusk/status/1519735033950470144