From a link in TFA: https://ounapuu.ee/posts/2024/05/02/smartplugs/

Thank you for the link. May I ask what TFA means though?

It is a commonly used abbreviation for "the f...ine article". On discussion sites of the Internet of yore, people would tell you to RTFA — "read the fucking article" — when it appeared you were chiming in without having first read the item under discussion. This is an extraction from that.