As fans, we've seen some players develop slowly. We've seen some give everything they've got to play in the NFL but not be able to because of injury. We've seen some not become what we hoped because they just can't, they don't have the ability.
I've never seen a reason to bad-mouth or make fun of any of them. If they weren't good enough to start or contribute and we rely on them, that's on the coaches and front office.
That doesn't mean we can't have critical analysis of their play or readiness to contribute or lay out concerns about them. I just see no need to try to run them down.
At this point, I am concerned about what Mazi can do based on his rookie season where he didn't do much of anything, but I don't know how it's going to turn out. He was going to be a second-round pick at worst, which is pretty high for a nose tackle, so I think most teams thought that he would become solid in that role at least. And that may happen, but we may have to wait for him to get there. But the way things work in this league, and especially with this team, is we're going to rely on you even if you're not there yet.