Give unsolicited beta.
If someone fails multiple times on a climb, sure give them a few clues. But giving a step-by-step “map” to a complete stranger who hasn’t asked for your advice is ridiculous. Personally, I enjoy the exploration, the unknown — deciphering the rock. There are many techniques one can employ to complete a climb and someone’s height, body type, strengths, and weaknesses will dictate their style. Nevertheless, someone yelling advice while I’m gripped out of my mind, 25 feet up on a boulder with no idea where to go is unsolicited beta I’ll take any day.