pCloud Drive recognised by Roon

I was just doing a few experiments with storage and noticed that pCloud Drive is recognised by Roon.
I can place music up in the cloud and it scans and plays fine.
Didn’t realise this - thought it was only Dropbox.
Is this the same for all cloud drives?

Note: the data on pCloud Drive is not on my local drive - I don’t sync it, except for one single folder (not the one I tested for Roon).