> I'd be a lot more fine with it if it was just algorithms designed for addiction (defining that in law is tricky)

An alternative to playing whac-a-mole with all the innovative bad behavior companies cook up is to address the incentives directly: ads are the primary driving force behind the suck. If we are already on board with restricting speech for the greater good, that's where we should start. Options include (from most to least heavy-handed/effective):

1) Outlaw endorsing a product or service in exchange for compensation. I.e. ban ads altogether.

2) Outlaw unsolicited advertisements, including "bundling" of ads with something the recipient values. I.e. only allow ads in the form of catalogues, trade shows, industry newsletters, yellow pages. Extreme care has to be taken here to ensure only actual opt-in advertisements are allowed and to avoid a GDPR situation where marketers with a rapist mentality can endlessly nag you to opt in or make consent forms confusing/coercive.

3) Outlaw personalized advertising and the collection/use of personal information[1] for any purpose other than what is strictly necessary[2] to deliver the product or service your customer has requested. I.e. GDPR, but without a "consent" loophole.

These options are far from exhaustive and out of the three presented, only the first two are likely to have the effect of killing predatory services that aren't worth paying for.

[1] Any information about an individual or small group of individuals, regardless of whether or not that information is tied to a unique identifier (e.g. an IP address, a user ID, or a session token), and regardless of whether or not you can tie such an identifier to a flesh-and-blood person ("We don't know that 'adf0386jsdl7vcs' is Steve at so-and-so address" is not a valid excuse). Aggregate population-level statistics are usually, but not necessarily, in the clear.

[2] "Our business model is only viable if we do this" does not rise to the level of strictly necessary. "We physically can not deliver your package unless you tell us where to" does, barely.