Earlier quoted context omitted.
Yes, if you have a team, the team should discuss work progress, discoveries and problems in a shared space that is accessible by other team members. If conversations about the work itself happen in silos because someone is not comfortable, you're doing it wrong because you're fixing the symptom instead of the cause.
So how do you propose you “fix” the cause, which is some human being’s discomfort at working in a particular way? Do you force them? Sack them? Threaten them? Or just send them for reprogramming? Honestly, this is just cargo cult stuff.
Being uncomfortable isn't a veto.
All your criticism is just framing. It presupposes pathological work practices are actually just personal quirks. If you can't type a question in a slack with 20 members you are basically useless.