I do see your point, but I think the decision to skip over exploring Bendis' missteps with Laura for ANW was a wise one, as, if she was supposed to be taking on a new mantle, focusing on the past wasn't the way to go. However, an argument can certainly be made that Laura's voice shifted to bridge this gap, but it is possibly difficult to separate this from the context of ANW having more of a comedy element. ANXM also confuses the era so I just try to be pragmatic in my X-23 fandom, because she can be a tricky character to write as we've seen, but more often than not her primary writers have given us far more good than bad. However, I don't mean to imply that my appreciation of Taylor's Laura is any more valid than others, so this is just my take. I would love to have the page space to really sort out all the kinks so to speak, but you have to be expedient to get to 35 issues in this era.
I'm gonna keep this brief, but there is a fair amount of science out there demonstrating that intelligent people tend to swear more. If you Google "Intelligent people swear more" you can find various news reports on studies proclaiming links to intellect and swearing, the positive benefits of swearing and that intelligent women tend to swear the most. This isn't a be-all or end-all, but, in short, I think you're over-focusing on a single swear word. It's hardly an "excessive use of profanity" and, while art is subjective, you are twisting things significantly to fit your argument.
You've only responded to part of my post, but my rebuttal is that hanging around with peers versus being responsible for a young person who is growing and learning is very different. Moreover, Gabby is a clone of Laura, so she is quite literally providing a window into a past Laura could not have, and that's powerful.
Finally, even in the Marvel universe where there's magic and future tech and all sorts, mermaids would still be really cool to see in person! It's easy to lose track of this when we're seeing so much fantasy/sci-fi stuff in the Marvel universe, but it's pretty amazing visiting an aquarium, so Atlantis must be hella legit.