If bitcoin exists until then, bitcoin mining pool will be stopped. The chance of running is too low; unless BTC reaches a tremendous high price.
I don't know exactly how many satoshis will be generated on every block after 2100 but I know they will be very few. Imagine splitting 1 satoshi.
In LN, it can be split I guess; it's possible to split. Not a big deal at all.
Both are different discussion seems like.That one was for dividing small units of bitcoin. While here OO is looking for what will happen to mining pool when the reward will be low although OP have added the dividing issue in the later part.