Clrnc well, as I don't think I am one of the people who had talked of Nwaneri possibly being destroyed by starting games now, though I do agree with being cautious with him, I'm probably not the right person to answer that question.
But in reference to MLS, it's clear that he's started games where Arteta deemed him the best - only? - option available. Nwaneri has, variously, Saka, Ode, Rice, Merino and Havertz to contend with.