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?
Generally these sketchy plans can be used for redundant offsite backup. If your offsite backup goes down, you can just get a new provider. I've never done it personally, but I know a lot of people use this mentality with e.g. unlimited Google Drive plans, or any other abusive use of hosting services.