Not really with the same flexibility.

You only get usable capacity of the smallest disk in a vdev or you have to add a new vdev with your newly sized disks.

Unraid lets you mix and match however you like and get all the usable capacity (as long as your parity is your largest sized disks).

Cisco, HP, and many other “Enterprise” switches will take a minute or two to start forwarding frames after boot.

Doesn’t really excuse Ubiquiti but that’s what they’re trying for.

Why are you searching for a solution to a problem you don’t have?

There’s nothing wrong with systemd.