Why four weeks? Surely you could have reached a similar conclusion in a day, or less? Or did you learn anything in that time that couldn't have been learnt in a short burst of unprotected internet activity?
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.
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.