I mean, it's not just TB. It's every bass player, almost.
I'd even go so far as to say that every serious bassist needs one. Or better yet, two.
Yeah, no. Lots and lots and lots of bassists don't play Ps, and lots of bassists will never own one. For example most 5 strings aren't Ps.
These threads are always pretty heavy on confirmation bias. If I went by the young Japanese and South Korean bassists I watch online I'd assume the P was on its way out, because if they're playing Fender style basses they're more likely to be a J or some take on a J.