I have lots of mounts in fstab with noauto as I only mount the ones that I'm working on at a specific time. The ones I have with nfs shows up as umounted under "Remote" in Dolphin. That works great. I click on the one I need, do my work, right click and unmount. Perfect! The wish I have is that this behavior would be the same for sshfs mounts in fstab.
Just noticed that it's been implemented in Version 24.12.0.