WTF is “AI-enhanced storage”. Assuming you treat any data uploaded like it could disappear at any time and encrypt your files before upload using e.g. BorgBackup, Kopia, Cryptomator, GoCryptFS etc, it’s fine to use it if the price makes sense.

I inherently don’t trust a service like this though. If you’re not paying a fair price for something, there’s probably an ulterior motive. Maybe they’re trying to get a proprietary client onto your computer?