More or less? I mean I know that because of Marvel method, he had a basic idea for a plot, and the artist came up with the details of what the plot was gonna have, then Stan Lee wrote the dialogue, and while it's mostly vague how much who did what, I can't only blame him for writing issues, artists like Kirby or Ditko should also be taking the blame in crap issues lol.
A few days ago I was reading Thor comics, and man the Anti-Communist issues are easily the most boring ones, just, bland patriotism and boring villains for the most part in those, at least they're short reads.
X-Men also showed me that such writing issues weren't only limited to them, 'cause after Lee and Kirby leave in issue#19, the next writers keep up the same "Meh" feel X-Men had, but admitedly I stopped at #22, and I hear it improves even before Claremont comes around.
So yeah, short version is the style at the time isn't something I enjoy when binge reading, character writing definitely didn't age well too, but there can still be fun stuff here and there with the absurd plots.