Today the reputable sites are an absolute mess with huge, bloated and completely unusable ads. So yes the ads back then on non-reputable sites were worse because of what the browser makers allowed websites to do but when you compare the reputable websites? There is no contest that today is far, far worse.
Nothing quite like those search that took you on sketchy websites and their porn pop under blasting orgasmic noises in your home / office while you frantically try to find who does that (and then close everything because it's taking too long).
"The good old time", as they say.
Searching for which tab makes sound is one thing, searching for it and not finding it anywhere because it's a pop under positioned at the bottom right of your screen is a whole other experience.
I prefer a (collection of) ads that obfuscate the entire page I'm trying to read but doesn't bother me while I look at something else and happily let me close and go away than something that makes everything a hog and crash my browser randomly while I might not even see it because it's five tabs away in the footer of some website.
I would certainly argue the way this comment (and many others in a lot of threads about ads here or elsewhere) seems to imply that ads are at their worst ever.
I mean either people forgot or are too young to remember, but in the 2000's alone ads had both their "pop up and sound and unclosable javascript spam" and their "flash everywhere turning your modern supercomputer speed into that of a 80's calculator" eras, and probably a lot of other ad-cancers that my brain chose to forget. The entire reason the ios/flash debate happened was because 1 - flash was on every page and ad, 2 - flash was eating every resources you would throw at it and still need more.
I mean, I agree totally that the web without ad blockers is insane, but I think many also see how it used to be as much better than it actually was.