It’s not a bit. I’m actually one of those weird people who sees change as a good thing. I don’t have that disease where I think that changing views with new information makes me stupid. It is a result of having a habit of thinking for myself instead of just trying to memorize what a “good political party member” is supposed to think about a given issue.
Changing one’s mind isn’t always good. You can absolutely change your mind to a worse position, and nobody should applaud you for that. In this case, I don’t actually think that Biden has ever had strongly held personal beliefs about this issue or really any others. This is typical of politicians. You can pretty well tell when someone has genuinely held principles (they change little over time), and if they genuinely change their minds, they will usually explain in detail how it happened. That is definitely not what’s going on here lol.