I have been here a LONG time. In general, I find many helpful, caring people. Sometimes I roll my eyes at seeing the same question asked for the billionith time (like can I just use an extra day instead of adding park hopping type question) but I just skip that or realize that the person is probably new and it wasn't such a stupid question when I was new. Here are my top 10 observations from 13 years here:
1. The VAST majority of people are extremely nice/helpful
2. People do not know how to read or just have selective reading skills
3. Tone is seriously underrated
4. There is a very VOCAL but very small minority
5. There are certain boards/threads I just avoid completely
6. Everyone is a perfect parent with no debt

7. The elitist tone on these boards has increased tremendously over the past 3 or 4 years
8. The vast majority of people who visit Disney have ZERO idea about these boards or strategies or anything like that. So popular opinions/strategies/beliefs in DIS world in reality may only be known by a very small percentage of people.
9. If you watch reality tv, do not read reality TV threads. Someone almost always spoils the outcome

10. It is very hard for the vast majority of people to see all sides of an issue and articulate their stance while also understanding why someone else may feel differently. The FP+ haters/lovers is a great example. I think it will benefit my family but I can see why some people would hate it but yet I get attacked (even though I clearly state this) so I just avoid posting in those threads now
ETA: Bonus 11. Most people tend to forget that Disney is a multi billion dollar profit driven BUSINESS. Enough said.