It’s not really doxxing someone when they freely put their name out there, in many places, including in content they themselves have posted to Hacker News. That said, parent probably didn’t need to post a linked in profile either heh.
Not the GP but it's not "doxxing" to point out someone has a conflict of interest, and it's important that we all be open about our potential biases when discussing topics like this. And perhaps even more important is that hiding these potential biases get called out to disincentivize bad actors.
It's possible to say "this person works at this company" without sharing their entire work history and other info. Several people did this.