It's not to review bands, it's to review mixes. He runs a channel focused on audio-engineering advice, aimed at young metal heads. What's the problem?
It's $15? If you're making metal, I think that is a reasonable amount to market your music to people that you explicitly know are into the genre.
Here is Glenn's own published opinion on "exposure" https://spectremedia.ca/youre-playing-for-exposure/
I can see how that comes off as a bit hypocritical, but it's also a different situation. That is explicitly spending time and money to play music for free. The stream is just sending a pre-made track to him and getting tips on the mixing. Like I said before, I would consider the cost to be paying for marketing rather than being paid on exposure.
I think there is a big difference between being asked to play a venue for free, and paying a whole $15 to have their bedroom mix critiqued by a guy who specializes in a niche genre with a chance that their music might be heard by viewers of his channel, who are enthusiastic about the same niche genre. The dude is not out here claiming that playing your music in his live stream is going to win you a record contract or get you to platinum sales. Maybe he thought a whopping $15 wasn't all that much, considering the number of people in his comment section that are continuously dragging on him for having the audacity to inform teenagers that they don't need to drop $4k on a Gibson to have a quality instrument.
