Why are you angry because the founder is disappeared? I don't get it. He released the software, gave to us the code to develop it and chose not to be known by anyone. Respected.
I searched a lot about this but I didn't get the truth.
The articles doesn't match with eachother.
Of course they don't. Most of the articles write fake news, just to gain their engagement. The truth is unknown. If you want to know the true reason he left the community, you'll have to ask him/her. Although, we can make some assumptions for his/her possible disappearance. In my opinion, since bitcoin has no owner, it would not look good to have a founder. If a founder existed and was known it would be very unfair for the others, because of the wealth's difference. Imagine if Mr. Craig Wright had 1 million bitcoins just because he created it. Except that we would be pissed off, Craig Wright should be very careful; he would be a freaking billionaire. I like thinking that besides that, he wanted to remain anonymous to keep that beautiful mystery.
Also, he/she seemed to care about his privacy. Consider reading
The Complete Satoshi, if you want to know all the messages he/she ever sent and
I gathered every Satoshi Nakamoto thread to take a look on every thread, related with Satoshi, on bitcointalk.