This is blind partisanship.
Some of the early stuff is a bit overdone in the romantic mode don't you think?
I'm not so blindly loyal as to say that everything Keats touched turned to gold.
Even his later works were not all as good as he would have wished.
Otho The Great is a prime example of a noble attempt at a different genre that ultimately failed. It has many fine passages but as a play it doesn't work.
By admitting Keats failings we do not by any means diminish his greatness.
His greatness lies in his humanity which involves a certain amount of failure and imperfection.
Aliquando bonus dormitat Homerus
[Even great Homer sometimes sleeps].

"Oh what a misery it is to have an intellect in splints".