Yes,with Trump out of power the dynamics of Putin's invasion changed. Putin's biggest folly was his underestimation of Ukraine resolve and World reaction for Ukraine through continuous military support.
I suppose like Trump ,living in a bubble surrounded by yes men hasn't helped
On a personal note. Historically, totalitarian strongmen would rather burn the world than lose face especially during war.
However, history also proves ,fact is stranger that fiction. All we can do is wait and see.