He’s not a good manager? Based on what, managing teams that have the expectation of relegation every season and not only avoiding it, but exceeding expectation?
He managed on a shoestring budget at Burnley for years and achieved way more than he was expected or should have - I’d say that is a success in every aspect.
What did you expect him to do at Burnley for you to consider him a good manager based on his managerial career? Qualify for Europe and massively overachieve with limited funds, infrastructure far behind most of the league and a squad most tipped to be at the lower end of the table every year…. Oh wait, he did.
And the same question for what you expect of him at Everton. What would you like to see him do with our squad? With an owner and board like we have had? With FFP restrictions? What would be a success? Most would consider 15th a more than successful season which means we are going to lose a lot more games than we win.
Dyche gets an awful lot of criticism, and a lot of it is completely unwarranted. Would I like to see better football? Sure. Do I think we have the players for that? No. Lampard proved that with the style he tried to adopt.
You don’t have to score 3 every game and win all the time to be successful. He’s managing Everton, it is very much all relative - just like it was at Burnley.