You're just being stupid. The reason companies blacklist channels is due to them being unbiased and not shilling their products hard enough. ASRock were one of the other companies to blacklist Hardware Unboxed, and it was for pointing out that either their X570 or B550 boards were crap (don't remember which). They blacklisted Gamers Nexus at the same time for the same reason. I guess that throws doubt on Gamers Nexus' credibility too? Asus are another one who had a problem with HU for making a big deal out of the fact that the 5700 XT TUF was outright faulty by design. Asus threatened legal action against them and demanded they remove the videos, which they refused to do. And of course they were proven right, and even Asus admitted it was busted in the end and released a revised 'Evo' version to fix the exact problem the videos pointed out. Another stain on HU's credibility in your mind though.
Being blacklisted from receiving review samples should be a ****ing badge of honour for a reviewer. Not being willing to sell out and be an unapologetic shill is what these companies hate, not "biased" reviews.