It's not useless, it's predatory, deceiving, and outright hostile. I literally have to screen my entire network to avoid being tracked by it within my own home. I don't answer phone calls because of it. I have to screen media for my children so they're not manipulated by it.
I think you're intentionally being flippant at my expense, but it's impossible to live in society and avoid advertising's influence.
Facebook and Twitter will adjust who you see content from to increase your likelihood of interacting with advertisement. As more and more social interaction happens online, this can influence who your friends are if you're not careful.
I see no reason to deride someone trying to wrest back some control.
