Also LTS means "95% of the developers left for the newer version because on open source projects no one can be forced to work on legacy applications like in business world".

Good luck with that. I tried to go on with the Ubuntu's LTS once, and the logic definitely doesn't work. Bugs, even major ones, just pile up faster than the remaining couple developers can fix, and it's was too painful of an experience to repeat. Ubuntu LTS has shelf life of 6-12 months unless if you start paying. Which is unfortunate.