>>12603332There are very few tests online that present themselves as serious and determined to measure IQ.
So it depends on the test you are taking.
And your theory is correct, most people wouldn't share a low score, but there's another side to it. Most people who volunteer to do an IQ test or puzzle, are usually above average, it's really striking, usually between 105-115 on average. This is why you don't see people getting below average scores that often, they don't post it, or they don't take the test at all, or don't even know what IQ is in the first place.
Most people on here are very ignorant about the lower end of the intelligence spectrum because they have spent most of their lives with people like themselves; above average, curious, engaging, whether they think they have or not. It's only until you meet a real person with an IQ of 90 that you realize your social circle isn't very normally distributed, and there's a lot of bias occurring when you opine on topics like these lel. I'm probably being biased myself.