Leaving this here for other googlers so they may not need to waste 4 days emailing support.
Dash was encountering a “fatal error” for me and spamming a stupid message on my HUD infinitely because Oculus no longer supports spanning multiple displays. So for example if you have a triple monitor setup and use Nvidia control panel to span the three monitors to act as one monitor instead, you’ll encounter this. And need to disable it in order to get oculus to work.
which is really annoying because I need to now toggle spanning my displays to switch between using oculus and using my triple monitor setups for other games.
For anyone still experiencing this issue, I was digging around in the oculus log gatherer and found a line that kept repeating something along the lines of C_ProgramFiles_Rainmeter_Rainmeter","isClosing":false. So I decided to close out rainmeter and retry the Press any button to restart oculus Dash and it worked so try to stop any background processes before uninstalling and reinstalling.