For legal reasons switch donations to tips
On the https://safety.twitch.tv/s/article/Twitch-Terms?language=en_US page. Some streamers are in legal jurisdictions where using the words donations cause them to fall under different tax laws.
The word tip has no such limitations I know of anywhere in the world.

Hey there!
Thank you so much for this feedback!
We have updated the definition to Donations: Monetary gifts to a streamer made through a third-party service, such as PayPal. Some streamers refer to these as “tips.” Please note that gifts made to streamers are not recognized as charitable donations for tax purposes. All fundraising for charities must be through a platform that allows donors to donate directly to the charity and receive a tax deductible receipt.
Hopefully this is better clarification for donations vs tips.