In most jurisdictions there are, at times weaponized, limitations, and that's the tradeoff those jurisdiction landed on.
I don't see how this proposed limitation could produce acceptable weaponizations.
Just think for a second how outlandish these would sound with such limitation in place:
- The ban on "persuasive content" is used to shut down political dissent labeled as "unwanted influence."
- Independent journalists are silenced when their reporting is categorized as "promotional advertising."
- Fundraising for humanitarian causes is outlawed as "solicitation advertising."
- Religious discussions are prohibited as "advertising spiritual beliefs" or "donation to the organized religion."
- Medical awareness campaigns are shut down as "advertising health concerns."
- Environmental activism is criminalized as "advertising eco-agendas."
There would be just no end of these.
Thus as always in society finding the right approach and right way of regulating isn't easy.
All of the problems you listed can be prevented from becoming endemic by having clear definitions in the law and generally reasonable judges. But if our judges are generally unreasonable, we are screwed either way. So what’s the downside to setting up a clear law against advertising?