That is, you can only share ideas by replying to other people's posts, and if you write a post yourself, you don't listen and get banned. And then posts can only be with questions, did I hear you right?
then I don't understand, in 10 years I have interacted with more than 3000 startups, collected and analyzed their problems and offered a solution, how do I talk about it? any post of mine about it gets a ban, I get accused of promoting myself? what am I doing wrong?
By listening to someone else describe a problem that is important to them.
And then sharing my ideas which are relevant to the problem that they think is important.
Telling-the-world is talking-at people.
Anyway, you probably have more than one idea.