Belichick is far from perfect and he made a series of significant errors last season, but the binary way in which you see this situation is pretty ridiculous.
You’re incapable of critiquing Mac Jones and thus offload all the responsibility for the offensive performance last season (and Jones’ suboptimal play) onto anyone but Jones (including Belichick).
You’re basically tossing Belichick under the bus to cover for Jones, which is pretty insane to think about. Both deserve ample critique for their performance and decisions last season, yes.
If I was starting a team going forward, would I rather have Belichick without Mac Jones, or Mac Jones without Belichick? I’d go with the former without a moment of hesitation. It’s hard to believe anyone would pick otherwise, but here we are.