Hi, I can give some information but we English is bad excuse me:(.
For twitch the biggest incomes are the ads + subs, for a channel of 3000 sub at 5$, the ads still represent 70% of the channel's income (which is huge) and for information you have to be a partner to get back a % earned by the ads, affiliate them (like me only gets back $1.75-2$ per sub of 5$ and 0$ of the ads), a partner can have up to 3.75$ per sub and gets back a % of the ads.
For my part, I earn about $200 a month from subscribers ^^.
Insults are not prohibited if the streamer puts the +18 in the parameters except that 90% of the partners do not put it because they lose a HUGE % on the income of the ads (there are fewer passages because minors do not see the stream in the list)
Twitch will NEVER let go of the ads and they had even managed to get past the ad blockers.