Watching streamers gambling with a ton of money is a complete waste of time if you ask me since the funds that they use are usually supplied by the site that they are gambling in which implies that the risk factor here is zero.
It's a clever tactic used by many popular gambling sites to attract gamblers for sure, but trying to replicate their wins is silly due to the difference in the risk factor between the streamers and gamblers.
I guess some people watch these streams for fun which is the silver lining here.
Pretty sure it is wasting time activity if we do not like it but there are thousands of people who like to watch it for some reasons.
Some people watch it because there will be giveaway by the streamer and some other watch it because they purely like to watch it.
I myself do not like to watch live stream (any content) but I do like to watch some clips of nice winning from the streamers (I dont care whether they use real money or not).
In this case, Drake is an official ambassador of Stake so if Twitch will ban him then I believe there will be communication between Stake and Drake to find the best alternative streaming platform.