Another negative to add to the list. For me Synology has mostly been a disappointment, I'm sorry to say. Seems their software has been generally in decline for a while. DSMv7 was delayed over a year ago [1], and now they don't expect to ship until summer 2021. v7 doesn't seem to bring anything interesting to the table IMO, and now they want to take away root? Meanwhile the only thing I saw from v6 updates was a request for spying/telemetry [2]. Wanted to like Syno but it's too locked down, too expensive, too annoying.
My position [3] hasn't changed from last year - I don't see myself buying a Syno product again, nor recommending them to most of my technical friends.
[1] https://www.snbforums.com/threads/dsm-7-preview-delayed-unti...
The "this is for security reasons" is just silly, none of the exploits they've been hit by to date that I'm aware of utilize or require inserting a kernel module into the system. And if they have the infrastructure to sign modules to allow insertion, they could extend you whatever signing they utilize.
It's not like a nation state actor couldn't hack Syno corporate and get access to signing keys if they were after a targeted attack...
This of course assumes that Synology doesn't remove this option before DSM 7 is released.