Strider is in the rotation until he unequivically proves he shouldn't be there. If he can't develop a third pitch, he's in the bullpen a year or so out and he'd probably be solid out there if he's healthy. I've been critical of Anthopoulos' slap-happy approach on the extensions, but Strider should be at least a decent bullpen guy through his contract at bottom. If he gets squared away, he can still be a rotation guy.
But, to me, this is another guy who was rushed through the system. His top-tier stuff plays well, but as we are seeing now, there's not much to fall back on if his stuff isn't quite there because they didn't take the time to develop him.