Yes everyone is aware of the problems with flash. The point was that nothing today compares with how nice the development tools and experience were for it.
You'll be happy to learn that Adobe Animate is the Flash Professional (née Macromedia Flash, née FutureSplash Animator) development tool/experience: https://www.adobe.com/products/animate.html
https://lottiefiles.com/plugins/animate
Disclosure: I work at LottieFiles.