Bottom line is these players didn't suck... Mac sucked, and the offensive line fielded the most different starting five combinations in the NFL due to injury.
Fans here and other forums often say they understand that football is a team sport, but then they make foolish statements like "Mac only sucked because the weapons sucked" not realizing that the same doesn't hold true for Brady, Mahomes, Burrow, Herbert or any top tier QB in the NFL.
The ball travels in one direction, receivers can't throw to themselves, they're beholden to good scheme, good blocking and good QB play... weapons can't produce in a vacuum. Randy Moss on the Raiders in 2006 was washed up and old, on the Patriots in 2007 he posted the single greatest receiving season in history. It's a team sport.