The context that is missing, of course, is Why?
There is no doubt that he is inconsistent. What is the Why behind those inconsistencies.
Looking at his entire NFL Career - I have some whys that I believe to be relevant: 4 HC in 3 years. 4 OC in 3 years. Hue Jackson. Freddie Kitchens.... then a rebuild of his mechanics at the start of his 3rd year under KS with a new QB coach changing his footwork. Then there were two "bad weather games" .... Folks pretty much gave Mac Jones and Josh Allen a pass this past week because of the bad weather - in the 2020 Raiders game the weather was as bad and Baker threw 12/25 and got panned for it. In the Texans game Nov 15th it was worse with gusts up to 72 mph ... Baker went 12/20 and again got panned.
Maybe Baker just isn't that good - but I see valid reasons for most of his really bad play in addition to his own issues. Those reasons/influences add and create the acute inconsistency to my mind. I mean Kitchens was a truly inept HC - but Baker was also ill prepared that season and over weight and out of condition, there is blame enough for both of them, but I don't believe Baker has been given the same stable opportunity for success as Lamar or Allen for example.