I can't really make heads or tales of the link other than they use the term commercial use, so not sure if commercial means for business only or not.
Sounds like they want people to go to the next level of software, but I am no expert. Sounds like no more updates will be provided for the current version.
I would imagine, like anything else, your stuff will work as it does now but no more fixes or updates.
Coming back to where you started is not the same as never leaving