Whether it makes sense for anybody to do it is the real question. The threat model where this is a useful thing to do doesn't really exist in my opinion, at least not for obfuscating random comments. Perhaps if you're doing some anonymous journalism that's uncomfortable for your country's regime, and you've previously written other stuff using your real name, it might make sense to run your writing through a LLM, maybe. In addition to a bunch of other Snowden-esque countermeasures.