It's not the ads that are the problem, it's the widespread tracking + use of personal data that large ad networks like facebook perform. That's why they're using the _data protection_ legislature against facebook.
No, that is the users problem. The users determine if FB has the right to exist, as no one is arguing that any corporate entity simply has the right to exist.
I haven't used FB in years, but even I know that if FB didn't exist that another service would fill the gap in the market. The problem is FB plays fast and loose with privacy and security, which should be the focus of criticism for FB, since that negatively affects users. If FB didn't exist, you still run the risk of another player making the exact same mistakes.
> as no one is arguing that any corporate entity simply has the right to exist
Yes, but I do still see people give the "just don't use FaceBook then" argument on every post about this on HN, as if we should just ignore all the problems. Under this insane framework any horrible behavior by a company towards their customers is justified as long as you use their products willingly.
This also ignores the massive existing adoption FaceBook has. If I want to switch to twitter or mastodon or $otherSocialNetwork I have to convince everyone I communicate with on FaceBook to switch too.
The problem here isn't Facebook (even though it certainly has problems), it's that your preferences do not align with the majority of FB's existing users' preferences for social networks. That's my point - the users dictate what exists on the market, and entrants like Snapchat and TikTok show that it is possible for new social networks to attract users off of Facebook.
Existing legality is not necessarily a good cause to dictate if a business should exist or not, as for some markets the law tends to lag society (i.e. federal law and weed dispensaries). This discussion isn't really about legality anyways, it's about market demand.
In this case, you could argue that the "users" is almost equivalent to the people (of EU), because of how widespread the usage of Facebook is. What we see here is that the people is starting to decide that some things that Facebook are doing are not acceptable anymore.
FB is free because they can pay for it with personalized ads. I doubt generic ads would fund the site as it stands today.