When I was rising in popularity on TikTok, I enjoyed making clips of my D&D show, editing them and sharing them as 2 minute clips. These clips were very popular, reached a far wider audience than the show itself, and drove some audience to the show. But it would often take me hours and hours to edit a clip, trying to trim around pauses, cross-talk, and make moments that took 20 mins in reality seem like they happened in 45 seconds. It was only a matter of time before a little voice in my DM brain said "if you summarize the scene before the big reveal, it will be easier to clip" "if you play up this reaction now, it will be easier to edit" "retake that line so you can get it clean for the edit" -- the show and my DMing was being influenced by the content I was generating from it.
Part of this was because I was so thoroughly lost in the sauce -- at the time, a lot of things were going poorly for me, but my show and social media presence was taking off, so even though I'd always intended to do this as a creative hobby, I was slowly being enchanted by the notion of being a full-time creator. I had this vague notion that a "full time" creator would be just like being a part-time creator, except more and I wouldn't have to work. This is NOT TRUE! Once your rent and groceries depend exclusively on a creative output, that creative output becomes something else. The pressures change. The stakes become so much higher. The audience goes from being a collaborator to an employer. I never went (and will never go) full-time in a creative feild for this reason. My creativity is too important to me to make it my livelihood.
This isn't to say everyone who is full-time has their mind rotted by it. I think I'm particularly prone to brainrot in this way -- I'm a chronic over-thinker, and I can't do anything a little bit.