Lee always believed that he wrote for the curious and growing children, as well as teenagers, adolescents and young adults (which at the time meant late teens and early 20s). Likewise, Lee said he was a failed novelist...so I think he was unloading the fancy vocabulary he had learned, stored, and was itching to use.
In a lot of ways, Marvel was the product of a mid-life crisis as far as Lee and Kirby go (Ditko was younger so for him this was his first big, and as it turned out biggest, chance). Kirby had a lot of success when he was young with Captain America and then he carried out his service for USA during the war and came back and worked with romance comics but after that he floundered for the 50s. Lee likewise had long suffered from impostor syndrome and insecurity and was 40 without achieving that literary career he wanted and so on.
Stan Lee remember had a lot of ambitious ideas, if you consider the stuff he did that never panned out. He wanted to work with French avant-garde director Alain Resnais and as editor once tried to get the playwright Tom Stoppard to write for Marvel (
https://www.cbr.com/marvel-comics-st...rd-playwright/). So yeah, Lee was underneath it all, quite a highbrow guy.