Many streams have fun aspects such as alerts or scenes to celebrate events. Such as flashing lights or strobes like a rave to celebrate.
Or other music streams center their whole channel around these rave type imagery.

Flashing lights and colors is one of the biggest trigger for seizures for those with epilepsy.

I propose giving streamers a feature just like “flag this channel as mature content” they can “flag this channel as containing flashing imagery” or something of the effect where just as when you enter a mature stream a pop up shows stating
“This stream has flashing lights or colors that could show up with or without warning”

This way people watching are aware of the potential of a flashing light trigger.