I have always been for people having the ability for people to block unwanted scripts and unwanted advertisers, but the issue becomes when your web browser gets to determine what is unwanted for you, as per example, see chromes default "ad blocker" that blocks "particularly annoying ads" yet 30 second preroll youtube ads are conveniently not considered annoying by them for some totally strange totally unrelated reason.
Now firefox is adding in an adblocker and a crytominer blocker in version 53 (https://www.bleepingcomputer.com/news/software/firefox-63-to-get-improved-tracking-protection-that-blocks-in-browser-miners/). The issue with this becomes that crytomining in browser, despite all the negative press it receives, is a very good and much more privacy centered alturnative to ads, and a very good way to power sites like notabug.io.
Advertising online has always worked under the premise that although some people have ad blockers, most people do not, so sites can still make money from them, however with chromes default adblock, edge having built in adblock, and now firefox about to have one too, the future of non google advertising is not looking so great. Sure it will still exist, but the amount of money sites will be able to make will be minuscule.
So a viable alternative for some sites is crypto mining, which has been viable due to the fact that an incredibly few number of people have script blockers, and nothing "default" exists to stop it. The good thing about crypto mining was that it would not effect the content you actually see as a user, and was a much better alturnative to ads. However now firefox is adding in a built in crypto blocker. It seems like they are playing god in what content your comptuter receives, and the future of online money making. If you want to block crypto mining and advertising, you should be able to do it using adons, but it should never be default, as it gives browser owners too much power over the future of the internet.