95% of the time, there is nothing wrong with the flush as flushed the toilets myself.
I knew the concept of flushing after using the toilet since I was about 4 years old!
Many people go into cubicles, see that the toilet hasn’t been flushed, and go to another one. Just flush and use that toilet.
Most of the time when entering toilets that not been flushed, it’s a poo 💩. Sometimes it takes a second flush to get rid of it
I should not be seeing other people’s excrement