I just removed the fuse for the DCM in my Subaru earlier today. Both because I don't trust Subaru with my data (the privacy policy says basically by existing in the cabin, you consent to being audio recorded and the recordings sent back to Suburu for any use Subaru might want to use them for) and because my car apparently can't go four days without being driven without the battery dying. I'm hoping the problem is parasitic draw from the Starlink DCM module thing that I just disabled.
If it's not that, I'll have to do more diagnostics.