> I am not allowed to use Advertising Channels to defame a brand. I am not even allowed to mention a brand. At least, this is how it is in my country ("enforced" by Reclame Code Commissie) where a committee that oversees the Ad industry can prohibit advertisers from using that infrastructure.

Perhaps you should reassess your messaging.

It seems to have become very en vogue over the past 5-10 years to just simply attack someone/thing that one doesn't like, as opposed to providing useful information and allowing people to make up their own mind, or putting the effort in to develop/provide an alternative.

Ultimately though, if your speech is being restricted, you have a government problem.