big demonstrations for instance which would encourage such discussions are not that common.

There are plenty of LGBT groups, and they all have full rights to protest and raise awareness, just as much as unions do. One of the vids I posted above references one such group.

i don’t know much about how these discussions are in practice but i imagine that the older generations have much more actual power in these discussions, altough the younger generation might be present.

I'm not too aware of internal party discussions on this, but the NPC, the largest and main governing body of the does have younger members, but it does skew older and male.

There are zero female politicians in positions of high power it seems, for instance the president.

The NPC is currently 25% women, so they do have some work yet to do in that area. However when you compare that number to other countries, its about average. Also doing better than the US, Ireland, Greece, and a lot of others. And of course socialist Cuba is the model for all countries to emulate with respect to women's rights.

Also wanna mention that ever since the cultural revolution in China, the societal focus on women's liberation has been astounding: women have received free birth control since the 1960s ( this isn't available in the 2020s in the US), communal kitchens and child care.

This lack of political power leads sometimes to riots, for instance the stonewall riot: https://en.wikipedia.org/wiki/Stonewall_riots - and i think in china something like that would be very impossible because it would be seen as danger of counterrevolution

Strikes are a fairly common occurrence in the PRC, and usually get the support of the government.

So when people want real change (so for instance female politicians in high positions of power) instead of endless debates without changes, in “western” countries the solution to that is to start a riot to gain attention and force a response.

This is true in all bourgeois democracies, because there is no democracy for anyone but the rich, and recourse through government channels is impossible, so only riots outside the system can address its ills. That's not the case with the PRC, which has a fluid working class democracy. I apologize for not being as well read on those internal debates as I can't yet read Chinese, but I'm sure they're happening, otherwise its clear that even the state-run media like CGTN wouldn't be so pro LGBT. And again, this is mostly a generational issue that's not isolated to one country.

So in short: this is a good example why i don’t trust china. communism/socialism is interesting but the big authoritative rule in china is bad because riots and demonstrations are healthy for democracies.

Actual working-class democracy is so incomprehensible to westerners that they can't imagine a system that's responsive to its people without riots. This is because governments are not neutral, multi-party bourgeois democracies are in fact capitalist dictatorships, while one-party socialist states are worker's dictatorships. I suggest reading this thread on worker's congresses to learn about just one such organ of China's responsive democracy.