I remember those days, and when Cartoon Network was the same. I didn't mind it then because, like you, I found the promos were a great way to know what was on the channel at different times. Especially in the age before on-screen guides.

But there are a few crucial differences between then and now: The ad spots were there to keep the timetables accurate, which is no longer necessary. They also served as a way to let you know what else was on the channel, which again is no longer necessary because that app opens to a menu of all available programming. And, now this is the important part, back then I wasn't specifically paying for ad-free access.

Anyway, I guess what I'm saying is, my Jellyfin server is about to get much more use.