I think they would still have gone after him. The Left wants to punish Trump and to use him as an example. I’m surprised they haven’t tried to kill him. Stopping him from running again is a secondary concern for them that will probably backfire.
He didn’t learn from his mistakes and so here we are: forced between supporting an unfairly targeted Trump (and by extension US) and saving America (and the opposition Party). Trump will be OK, convicted or not. We need to look at the bigger picture.