The biggest problem with the bubble that IT insulates themselves into is that if you don't users will never submit tickets and will keep coming to you personally, then get mad when their high priority concern sits for a few days because you were out of office but the rest of the team got no tickets because the user decided they were better than a ticket.

If people only know how to summon you through the ancient ritual of ticket opening with sufficient information they'll follow that ritual religiously to summon you when needed. If they know "oh just hit up Rob on teams, he'll get you sorted" the mysticism is ruined and order is lost

Honestly I say this all partially jokingly. We do try to insulate ourselves because we know some users will try to bypass tickets if given any opportunity to do so, but there is very much value in balancing that need with accessability and visibility. So the safe option is to hide in your basement office and avoid mingling, but thats also the option that limits your ability to improve yourself and your organization