NextCloud…moving/expanding storage

When reinstalling I put the data area on root, but I thought no big deal…I’ll move it later. It’s cloud storage that should be a basic maintenance procedure. But when I started looking into it, article after article says moving data storage is not recommended and it is strongly advised to reinstall to accomplish this. Really? Software who’s primary purpose is to store data doesn’t have an administrator function to easily move or expand [which often involves moving] storage?

It’s early in my research so perhaps these articles are talking about an older version. Surely…don’t call me Shirly… at version 16 there is a way to do this! It seems like a basic expected function for this type of software…IMHO.