Yeah I'd say they were pretty bad and then got worse. They were agreeable movies for a diverse group at one point, even if they weren't all Marvel-heads. The Joss Whedon style of quippy self-referencing dialogue and unlikable protagonists is their major weak point, it got old between Firefly getting cancelled and the first Marvel movie but hadn't been overdone in pop culture yet apparently.

An MCU sex scene:

"That was so hot how you did that thing 3 scenes ago ...I guess we're alone now"

"Yeah... this is the part in a movie where sex happens..."

"I suppose if sex were going to happen, we would start like this..."

"Yes, and then I would do this"

(cheesy montage to an old classic)

"Woah... so that happened."