Of course it isn't. Pihole and similar DNS-based blockers do nothing for those kinds of spam which require performing DOM manipulations to be removed. Check uBlock settings after installing it. It has a separate "annoyances" list. I enabled everything in it a few years ago and never had a single problem. It removes all the GDPR banners, "please give us your email" popups, useless "oh I am so original" plates in forum signatures, etc. etc.

Thanks for the tip. I wasn't aware that uBlock had all those extra options.

I wasn't aware of this option in settings. Thanks.

If the default annoyances lists aren't enough for you you can also add this one[1]

[1] https://github.com/yourduskquibbles/webannoyances

I've never been bothered by ads/want to support sites I visit. so never considered using javascript blockers.

But I must say I hate GDPR banners and this could convert me.

I would suggest ublock origin instead of ublock.

Pihole blocks server requests but ublock can do a whole lot more to the page by blocking specific html, css, and scripts. Ublock will prevent YouTube ads, for example, whereas pihole cannot as they come from the same server as the content.