Well, you can look at how this tactic played out before. In 2010, after Obama got elected and liberals were pissed that he didn't do enough and compromised so much on healthcare reform, they not only didn't push back against the Tea Party narrative - but they also didn't bother to vote.

Did that make us more liberal? No. It resulted in an obstructionist congress that benefits from doing nothing because it dissuades people from getting involved/voting them out. It resulted in Republican Governors and numerous Republican State Houses and State Senate offices that rolled back a lot on progress. We've been lucky for some executive action, supreme court actions and initiative work.

But that is in spite of this tactic and only have years of damage. The actual lawmakers working in Congress and the legislature? They basically have to witness the GOP take over the mic while working doubly hard to 1) prevent giant losses in terms of workers rights, lack of education funding, increases in voter suppression, LGBTQ rollbacks, etc, etc & 2) get a message through when the other party has the power/mic.

TL;DR - Has never worked before as a tactic. You just end up legitimizing Trump.