Nah he would most likely still win today imo because Trump can’t make a meaningful campaign that actualy attacks Biden from the left. The left can’t really make an anti-NATO stance that doesn’t boil down to real communism(good for movement building but you’ll never win at electorialism lol) and anything from the right is just poisoning the well.

But the main point is yeah the left will always be blamed. I can empathize that Bernie was the millennial voters first experience with this but anyone that is old enough to be politically active for the past 8 years doesn’t have an excuse to fall for this rhetoric anymore. If you’re still giving any shits about what libs say or think and let that affect your own decisions then you are also part of the problem.