Nope. When Pochita asked about bad films he was testing her ability to use his powers correctly, it had nothing to do with Pochita relationship with Denji, or with Makima actions towards them. It was about not using his erasure powers to do stupid things.
Fanfiction.
Indeed, and is NOT her fault. That is the whole point. And pochita noticed this.
Pochita could never have had this relationship with Denji if external factors had not helped him adopt his harmless dog form. In other words, Pochita was never able to overcome the limitation of his nature by himself.
That was a physical hindrance, not a mental one.
As we've seen when in the two times Pochita became CSM, he was still himself, and both times his main priority was finding a way to fix Denji's mental state.
Conquest is the same as CSM, except nobody helped her overcome the limitations of her nature. She, just like Pochita can become Denjis/Pochitas friend if given the opportunity. As Nayuta proves.
Wrong, she's not like Pochita because unlike Pochita who was just too strong by his own words, Makima's problem was her diabolical personality.
It's why that for Pochita to realize his dream he just needed to be depowered, but for Conquest to do so she had to be killed and have her personality completely wiped out.