> and basically makes you "pay" with your personal details
I believe the parent means that you pay/it hurts your wallet (even if it is $5 per year). When you "pay" via your facebook details being shared, then this cost doesn't affect you. If you cared you woulnd't be using FB in the first place :)
See also public groups/comments on Facebook itself: the realname convention makes most reasonable people self-censor to silence, leaving only the wildest nutcases posting (with rare exceptions in between). Even if you don't use your real name there, as long as you aren't on a dedicated spam account you'll still be connected to your real life network and that is enough for massive self-censoring to happen. Would your hn posts happen if they'd show up in the feeds of distant family? Mine surely would not, and that's while I try keeping hn posts to the highest quality tier of all my online interactions.
I believe the parent means that you pay/it hurts your wallet (even if it is $5 per year). When you "pay" via your facebook details being shared, then this cost doesn't affect you. If you cared you woulnd't be using FB in the first place :)