There are loads of talented young players out there who haven't had any chances at all yet. Why should one guy get multiple chances after being so underwhelming the first time?
If he does get another chance, it should be on a lower level team than the old Optic lineup. If he's really as good as you seem to think, he'll work his way back up.
Also, 21 isn't "very" young. Flusha, Krimz and JW were only a year or two older when they dominated with Fnatic.