>with an encrypted backup services included for first 2 years and requires the backup subscription to work there after.

Its confusing if you mean the NAS will stop working if you stop paying for the subscription or not. If you can no longer access your data on the NAS without a subscription, then the NAS just becomes the cloud with an extra up front cost plus the cost of your own electricity.

Personally I have started moving as much of my data out of the cloud as possible. I've got a Synology and a few single board computers running various services with a Synology in my parent's home for their photos. Their photos back up to my NAS and my data to their Synology.

Its a shame Synology decided to enshitify this year for all products going forward, but UGreen looks like a suitable replacement when I outgrow my current NAS.