I read the author's statement that they were "not out here wearing long nails for fun" to mean that they were not the one liking or invested in long nails. I may be reading too deeply between the lines, but I believe that reading the critical comments left by the "Internet Nail Police" may be more energy-consuming than the alternative of conforming to beauty standards. I felt a tone of sarcasm from the offense taken at "god forbid, there’s a smudge of dirt under [their] natural nail," which I took to mean that these comments are nitpicky and extremely likely to occur. Though it may be easy to brush off some amount of social scorn, being a public figure on the Internet comes with a volume of it that I've heard many influencers and content creators describe as difficult to cope with no matter how strong I assumed them to be.