I guess you paid for your tinfoil hat with cash too ?
You're being either foolishly ignorant, nasty or both.
Your accusation isn't just unfounded. It's blatantly impossible for it to be true and you should know that.
You're accusing someone of a wildly irrational belief in a ludicrously implausible conspiracy, but they're referring to something which is openly acknowledged by the organisations doing it. There is no conspiracy being claimed - it is being done and there is no attempt to hide it.
It's one thing for you to argue that you don't mind your every purchase being recorded, tracked, correlated with your movements and everything else it can be correlated with and generally mined and processed to gather as much information about you as possible for whatever purposes the organisations choose to use it for (most likely advertising or selling it to advertisers because that's profitable).
It's quite another for you to make an obviously untrue accusation solely for the purpose of slandering someone who hasn't adopted the modern fashion for thinking that privacy is an innately bad thing.