Reading over the particulars is a reminder of just how systematic Trump’s assault on democracy has been. If the 120th Congress does not make an effort to hold him accountable for these abuses, you can be sure that a future president will use this as a to-do list.
Impeachment creates a permanent public record of findings and popular support (via reps) for removing him. Even if he’s let off by the Senate, making this public matters.
No matter the popular support, Trump will be found not guilty by the Senate. This was proven by Jan 6th. The not guilty ruling will only support Maga like it did the last time.
Even if it’s still short of the margin needed to convict (assuming no Republicans flip, which is not a good assumption given what I’m about to say), impeachment with a Democrat-controlled Senate is not like impeachment with a Republican-controlled one. The Republicans quashed the trial before it even started, but the Democrats would hold a legitimate one. That is what makes the crimes impossible for the public, and therefore also any Republican who doesn’t want to be out of a job, to ignore.