I'm using Ubuntu 19.10 with Firefox 74.0 (64-bit).
In addition to Firefoxes built-in privacy checker, I have AdBlockPlus and PrivacyBadger.
With AdBlockPlus set to allow adverts on this site I get:

Note Chronos banner ad at top and the Machine DRO ad positioned before correctly positioned 'Thread heading looking weird'. All good.
When I forbid adverts on this site with AdBlockPlus, those two are zapped and the page formats oddly.

The Firefox addons that control privacy are highlighted in the red oval top right. Too small to read, but AdBlockPlus has blocked 9 things on this page, PrivacyBadger 4, and Firefox 3. (The checkers overlap; it's not 16 different issues, and – on this website – they're pretty innocent.)
Being on Linux, I'm controlling these things with browser settings. Windows users may find adblocking is being done by their Anti-virus software; most AVM packkages have 'web protection' features.
Spent my career in IT and still get surprised by different ways the same job can be done. When installing security software it's usually best to go with supplier defaults, which tend to 'better safe than sorry. So it's not unlikely people have agreed to block things without realising it. Have a look at the AVM and other security settings, it should be possible to fine tune them.
I don't believe the forum is faulty.
Dave