I do something similar with my personal laptops/PCs too — any actual files are in cloud storage[1], and mounted[2] so that they don't actually sync to the device, therefore not taking up space...
Honestly it feels very freeing having your data just be in server(s) somewhere, not having to worry about moving it between devices, or having to copy it over if you need to format/get rid of the device, or forgetting to copy over a file you need to your phone when going out, etc...
I do something similar with my personal laptops/PCs too — any actual files are in cloud storage[1], and mounted[2] so that they don't actually sync to the device, therefore not taking up space...
Honestly it feels very freeing having your data just be in server(s) somewhere, not having to worry about moving it between devices, or having to copy it over if you need to format/get rid of the device, or forgetting to copy over a file you need to your phone when going out, etc...
[1] Nextcloud rented from Hetzner https://www.hetzner.com/storage/storage-share/
[2] Nextcloud client has a feature called Virtual Files on Windows, and on Linux I just use the Nextcloud integration which uses WebDAV under the hood