It's not an unpopular opinion, neither do I think it is it a very relevant or interesting opinion.
He is, as most peopme know, a 21 year old with the top level experience and build of a 19 year old. If the likes of Nani, Ji Sung Park and Darren Fletcher were very good, and good enough to play useful roles in a United at maybe its historical best, James is not that level now, but he has attributes that, if he improves reasonably with experience, he might become that level.
As for this year's United I think he has proven quite ok for a secønd choice in his positions. That has impressed me, with his background. Additionally, he has played better than all the other in house candidates for the RW slot. Everyone knew we needed a right sided attacker, including Solskjær, yet we couldn"t get one last summer. That says little about James, nor about how useful he may becom. Suffice it to say that without him this season, we would have been even weaker, relying on Lingard, Mata, Pereira and Chong on the right.