I've noticed that at my current company as well. There's one reviewer who puts a comment forcing someone to come meet with him every PR, often the comment shows

I've noticed that at my current company as well. There's one reviewer who puts a comment forcing someone to come meet with him every PR, often the comment shows he hasn't even read the description, let alone the code. It's just a way to prove he's the owner and gatekeeper and no one else can commit to that area without coming to him in person.