Well if the goal is to help Trump build back up support right now I can't think of a better way than by forcibly removing him from office before 1/20.
(and this is basically what I was trying to say yesterday (albeit sarcastically) when you asked if I was saying we should let them vent.)
Impeaching him prevents him from running again in 2024. (משא"כ if they 25th him, AFAIU)
This is purely anecdotal, but the Trump supporters I know, which includes people who traveled to DC to protest yesterday, are disgusted by what happened yesterday and are not behind him at all.
I agree, impeaching him won't help the most extreme crowd. But I'm not sure that is enough of an excuse to not pursue legal consequences for his actions.