I don’t know how far owncloud and nextcloud have diverged, but in the nextcloud client you can add filters to ignore files by clicking the three dots on the folder in settings.
You can also free up local space by using virtual folders, but it only works properly on windows.
The fundamental problem with cryptocurrencies is that the people with the enthusiasm to make them (libertarians), are too stupid (libertarian) to understand why a deflationary asset cannot work as a currency.
It’s inherently a speculative investment. Nobody is going to spend something that might be worth dramatically more tomorrow and nobody is going work for something that might be worth dramatically less tomorrow.
Half of our military bases are occupied by the Americans and we need your permission to do anything.