I believe the tactic is called “all your eggs in one basket” (except the one thrown at sr. dickhead)
The logic really makes sense if you assume that your average citizen is too stupid to understand that the two questions aren’t mutually exclusive.
Sadly, they’re probably right. I’d loved to have seen a reasonable alternate democrat, but I can see the point that if one was on the ballot, that may shift some votes over to “well, why not, lets actively try to get this person in office by recalling Newsom”.