24/7 and I did the change 3 months ago, the power consumption is low because I only have running a Jellyfin with 2HDDs and the processor is a celeron with low power consumption. No reason not to do it.
I bought a QNAP NAS and installed a nvme drive with openmediavault and upgraded the RAM, to my knowledge, Synology hardware doesn't offer an easy way to do these changes.
In the end all I needed was a NAS box with a CPU capable of transcoding and this was the cheapest/easiest option.
Note that there is also other alternatives like QNAP.
And if you want open-source alternatives you can always use a VPN to connect to your home network with a NAS self-hosted deploy like OpenMediaVault or True-NAS.
Is there any real free alternative? And I mean free refered to freedom, I know PeerTube exists but finding a good/known instance to upload content knowing that the instance won't go down is hard.
EDIT: I found maker.tube and hardlimit, the first one looks promising.
Check this: https://ameridroid.com/blogs/ameriblogs/setting-up-openmediavault-remote-access-with-openvpn