Are all senate and house congressmen/women of only just one single party and no other, currently elected into congress right now?
Did congress also just cease to exist "immediately afterwards"?
Seriously, comparisons like this are really just completely something of delusion and comparing the US in 2025 to Nazi Germany in 1933 is a tired stretch worthy of just dismissing altogether to be honest.
Come on.
If you are interested in a working democracy it would be wise to not dismiss these concerns out of hand just because they draw comparisons to historical regimes where authoritarian overreach ended democracies. The comparison might be wrong, yet the concerns are real.
Sure the USA is still a two party system right now, but unless something completely drastic happens between now and four years from now, I fully expect Trump to say "the Constitution says a POTUS can only serve two consecutive terms", and he won't leave office and the GOP will be completely fine with that.