Is it possible to jump to only cuts on the video timeline when using ctrl-up and ctrl-down, and disregard the cuts in the audio tracks?
Not really. Ctrl-Up and Ctrl-Down are the shortcuts to go to Previous/Next Transition on All tracks. The only other option you have is to use Up and Down that will go through the current track only. There is no shortcut to go through all the Video tracks only.
It’s maybe not the official solution but you can contain all audiotracks into one container to remove all segments visible on the audiotimeline.
Dunno if uncontaining would be easy possible without copying them back manually later. Could be annoying if you are also editing the audio at the same time you want to jump on the videotrack.
Nice ninja solve, hildebrandtbernd!