I periodically read this ACT post to degauss my brain so I can think about these matters from a fresh perspective: https://www.astralcodexten.com/p/heuristics-that-almost-alwa...
Heuristics That Almost Always Work have a helpful hint right there in the name. They do work, and they do it almost every time. And depending on the topic that 99.99% may be even 100%, but we just can't reliably prove it. Stuff that works 99.99% of the time is very valuable and helps humans free resources and time for the less reliable or more severe problems. Or just for leisure. Personally, I invite author to go disprove every single idea on the internet and do it in careful and deep detail, let's see how long he would last without heuristics. :)