The thing that made RSS work for me is to really limit my feeds. Instead of following 10 tech news sites that have a bunch of overlap, I follow 1 that has most of what I want. A few blogs are for apps I use and want to be informed of new information, but they post infrequently, which is good.
Feed with dozens of posts per day turn into noise, especially if you have a lot of them.
By choosing one site I trust, I let the editors edit, instead of the algorithm.
Yikes. I read THOUSANDS of RSS headlines on a daily basis. This is exactly why I use RSS. You can easily get a glimpse of headlines and keep browsing.
That's the beauty of RSS, people can tailor it to their needs and wants. If I saw thousands of unread items, I'd shut down and give up. On the flip side, if you had my feed list, you'd probably feel like you were missing a ton of stuff. But we can both make it work for us.
I did have a job where I got 10k email per day for a good 10 years, so I probably have some PTSD from that. I'd feel like I was right back there if I had thousands of items per day in my RSS reader. I've been out of that stage of my job for a good 8 years, and I'm just now starting to get a handle on my email again, after feeling like there was no way to control it for so long.