I think a lot of people also don't take into account that many Holo talents and Niji livers (or even anyone in the scene, really), unknowingly, are friends behind the scenes, too. Not saying that is the case with Pomu and Calli, but we have seen similar things with Mumei and Selen and now Bae and Elira.
Talking shit about someone using your oshi will likely just earn the ire of your oshi more than anything.
Now, that aside:
UGH THIS SPONSORSHIP SHOULD HAVE BEEN SUBARUUUU WAH WAH