Because unlike Bellular he isnt a spineless sub obsessed baby that never stands for anything because he might upset and lose follower count.
Tali many times takes a stance on things, usually progressive topics and calls out people on being idiots like he did in this video, he isnt afraid to talk about politics and support what is right.
Most capital G Gamers TM much rather have a bellular who never takes any stance on anything, avoids any kind of controversial topic no matter how right or wrong and is completely silent about anykind of abuse that isnt massively supported.
In other words Tali is an honest guy who isnt afraid to go against people who are wrong even if he loses followers.