I wouldn't think any of her questions would relate to collusion since her questions are post Mueller's report because they would be pointless, then again she does have Trump Derangement Syndrome. *shrugs*
Do her questions pertain to the case, yes, but that's as far as I'll go re your question of me.
The context from which Aaron has composed his question is the past 2.5 years of her career. You don't care about that era, but you can't discard it if you're going to ask me to justify Aaron's questioning of her 15 questions....because to answer it in the context of today has no connection to his context.
For whatever reason she became the figurehead for the systemic left media Russiagate hysteria. Besides that, scads of social media users picked up on it from one another and spread, so it's far more reaching than the numbers you posted. It doesn't matter how large her audience is or whether you watch her or not, it helped drive division and didn't help America/Russia relations whatsoever. She spewed speculation that Putin was Trump's and Tillerson's puppeteer, that his and the administrations actions were at the behest of Russia. She even went as far out as to speculate about what would happen if Russia shut off our power grid during a polar vortex. She raised all this cold war hysteria out of her mind and irresponsibly duped her viewers. All the while Trump was taking actions around the world that went against Putin's pursuits, she knew all that but again didn't give a ****.
She probably did more to give Trump justification to call news 'fake news' than anyone, and she doesn't even mind. You can actually already buy 'Witch Hunt' tee shirts, mugs etc. on his 2020 re-election web site. Thanks, Rachel!
When you have time....here's a really good vid of Glenn Greenwald explaining exactly where Aaron Mate is coming from. The whole vid is great, has some reasoned views from David Doel too, but you only have to watch a few minutes of it to see the crux of Glenn's message. I post this link in hopes you will understand the larger picture.