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.
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.