I think it’s very simple. Will Hurd wants to run for something in the future, and thinks voting to impeach will make that impossible. Politics selects for the sort of people who find ways to reason to the position that will serve their interests.https://twitter.com/TimAlberta/status/1197703094055948289 …
I doubt voting against impeachment but asking sensible questions would have hurt him a few years down the line (and protected him a bit if Trump got more unpopular). But I think group behaviour largely explains that. I do agree that future elections are the right explanation.