This has always been my conclusion when I experiment with not using an ad blocker. So many websites with outwise "okayish" content are basically ruined by ads.
Some sites are littered with "targeted" ads like download buttons and similar, which I'm not even sure why that's allowed.
It's also fun on "big" websites like MS Teams, Netflix, hulu, etc, to see the "blocked" count raise into the hundreds.
I also got to see how they were affected for work, study and play over weekends and weekdays.
I did notice I started to wait longer for pages to load with the ad's so that I would not accidentally click on them while they loaded in. That and I got generally annoyed by the web experience in general.