Bilic is not beyond criticism however the question “who’s better†is always relevant, and more to the point who that’s an improvement is likely to want to join.
The "who's better" question is a bit crappy really, it's relative and it comes down to opinion and interpretation.
I'm sure it could be argued that Daniel Farke, Chris Wilder, Thomas Frank (three examples) would all have been lower down the list of potential head coaches than Slaven Bilic at the start of the previous season but I'm sure fans of their respective clubs will argue they are "better".
I've never once said Bilic should be sacked but there does seem to be some sort of fear amongst some of our fans about life without him.
That fear is irrational, there are others around that can succeed with us just like there are better footballers in the world than Matheus Pereira.
I think fans can be insular in their thoughts at times.