"We built Turbo with this question in mind, and streamers continue to earn revenue from ads that Turbo subscribers miss. For streamers – revenue you receive from Turbo subscribers who watch your channel is reflected in your “Ads” revenue estimate in your payout analytics." Source: https://help.twitch.tv/s/article/twitch-turbo-guide?language...
Disclosure: I work here, but I'm not close enough to the Turbo folks to do anything but quote public materials.