It was recently removed, but I've read at some articles that users from Canada are now able to use cryptos again. It was reported in June 2019, and I don't know if it is true as I don't really watch a lot of streamer there. I mostly stick to Youtube when it comes to watching gameplay contents. It would be nice for people to subscribe for their favorite content creator there though. I don't like the usage of credits cards when it comes to supporting these content creators, due to the charges that the banks make.

Edit. Here is my reference to the news : https://www.ccn.com/spotted-twitch-re-enables-crypto-payments-with-bitcoin-bitcoin-cash/