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
Man, that reminds me of how Wizards of the Coast pandered so much towards Basketball-Americans, only for it to fail miserably because joggers are far more interested in Yugioh than Magic the Gathering.