I don't believe in the conspiracy theories or that critics are paid off by Marvel but it's kind of shitty how they have been given a pass for that on almost all of their films but when it's DC...
This isn't true in the slightest - Marvel villains have personal connections to the Heroes, being their brother, their mentor, their best friend, etc, they have goals and motivations of their own, they have actual personality and character.
DC so far has had two villains that are lumps of hitpoints with no relationships, no character, no motivation, in fact they're so mindless they're barely sentient - Doomsday and the Adversary, and are about to get another in Steppenwolf.
If the next Spiderman film had Carnage as a villain, who is a similar pile of uninteresting, impersonal, mindless hitpoints as DC's villains, then maybe they'd be equal comparisons.