Flash was critised for many reasons from the valid to pure snobbery.

Since it's gone, we've lost an outlet for creativity - a way that many people went from being kids running a pirate bit of software to being employed making art / films / games.

We have Ruffle to play Flash, but we are still missing an editor - but Bill Premo is impmenting one, and has a Patreon here https://www.patreon.com/cw/billpremo it's definitely worth supporting.