No, there is a point beyond which the use of data becomes unethical and outside what normal people would actually consider what they reasonably consented to.

If you post on a forum, and I collect your data, create a unique writing style profile for you and then match it against other data I scrape or buy from across the web, perhaps your address you used to buy something that was also released to third-party advertisers because you didn’t read some three mile long EULA and I’m able to find all those details, then I use that data and go murder you I don’t then get to argue in court “Well, they posted all that info online, so they were consenting to me using their data in this circuitous, unintuitive way. They wanted me to commit this crime against them.”

That’s not consent. That’s a sociopaths conception of consent.

I get the tech cult has made it really difficult for people to understand these concepts, but it is not ethical to pretend that when people post on a social media page with the purpose of having discussion and debate that they also intend for their data to be used in these other tangential ways.