I’ve been a supporter of his but the lack of offense is making it hard to continue to do so, I agree. I still believe the glove is elite/great enough to warrant playing time.
I said it before, I’ll say it here: it’s hard to have him and Mountcastle in the same lineup. But Mateo brings that glove to a key defensive position, he should get priority.
That said, I believe Mateo would have a day to day role on this team as constructed. The thing that makes it hard to keep him as the starting SS is that there are guys in the system who are putting pressure on they organization to make a decision about what to do. If these guys weren’t in the system and producing at a high level, I’d be pretty satisfied with an all glove/no hit SS who can still deliver a 3+ WAR season.
But that’s not the reality of the situation.