Just because someone swears does not mean that a movie is "edgy". Hell, they dropped a decent amount of "shits" in Ragnorak, which is right around the same category as the F-word.Meanwhile, Fox started the popular R-rated CBM trend with Deadpool, a raunchy, hilarious, over-the-top violence Marvel movie and then did it again with Logan, a gritty, western-like setting from X-Men. Both movies are violent and have the tendency to say F-words and other things that wouldn't appear under the MCU. Even MCU TV shows, they don't go as far as saying the F-word and any of the thing like that, it seems good and basic and fits well with most of the cable drama shows. Some characters have some nude and butt scenes, but I don't think they go as far as what Deadpool does. Guarantee that X-Men would be incorporated into the MCU sooner or later, effectively terminating the Rated -R CMB movies, leaving Sony as the only hope to create an R-rated CMB for the Spider-Man universe.
As i've said, if audiences prove that there's money to be made with R-rated CBMs, which both Deadpool and Logan have, then Disney will not pass up on a money making proposition.