Has there been a change to ad density?

Last week during a stream, a viewer of mine brought up that ads seem to be less frequent all of a sudden, especially for lurkers and especially during longer ad breaks. I kinda brushed it off as an odd coincidence without anything to really back it up, plus the idea that Twitch would lose money by running less ads which is the OPPOSITE of what I'd expect them to do.

Skip forward to today and I've been noticing this same thing. I run 3 minutes of ads at the top of every hour so I can keep pre-roll AND mid-roll ads off for an entire hour and allow myself to go to the bathroom and whatnot, this way nobody misses anything. When I do this, I have a separate window open so I can see EXACTLY when the ads start and finish because the dashboard timer isn't always accurate.

Strangely, I've noticed that the window with the stream being viewed like any regular viewer will either get no ads at all during the ad break, or get one for 15-30 seconds and that's it. I still get 1 hour of pre/mid-rolls turned off so it's all still doing what I want it to. Prior to this, that window would get all 3 minutes of ads 100% of the time, and now I'm almost not seeing them at all. Even my biggest viewers who talk in chat a lot when I asked them have noticed it as well. I've also experienced this EXACT thing in other streams that I watch where they run 3 minutes every hour as well.

I've also noticed a pretty hefty drop in ad revenue for myself since this was first brought up, however I know that January is usually the slowest month of the year on Twitch, so I'm not looking into that as anything conclusive regarding the change, but more-so a coincidence.

Is anyone else noticing or experiencing this? I'm not seeing anyone else mentioning this on socials, but with multiple people in my circle experiencing it as well as myself with multiple different channels, I have to figure it's a site-wide thing.