Most cleanup methods are super lowtech. You want a specific bacteria to eat up some compound? Give them a carbon source like molasses and statistically they will end up cometabolizing whatever it is you wanted gone. These dark O2 microbes might not even need these pathways in other environs.

How soon before we get to the internet of ChatGPT results? Why regenerate a result when you can just store and archive it in a huge lookup list.

I think it's probably as bad as you imagine. Some cursory googling indicates plankton could double their mass in one day (ie split into two), so things would get pretty gross pretty fast until some limiting nutrient like iron gave out. I imagine beaches might become huge deposits of cellular slime.

On AppleTV the migration process for moving from HBOMAX to MAX was a bit smoother, it prompts you to download the new app and there were no extra login steps. The main hiccup appears to be that it lost about a week of watch history.