This is a huge reason for the question decline! All the easy stuff has been answered, the knowledge is already there. But people are so used to infinite growth that anything contrary = death lol
People also blame ai, but if people are going to ai to ask the common already answered questions then… good! They’d just get hurt feelings when their question was closed as a dupe
Stack Overflow has a whole network of Q&A sites. There’s places to post and answer puzzles, code golf, ask physics or political questions, etc. Lots of useful stuff not many people know about