> I think Minecraft and Roblox replaced flash for the new generations.

I think this is the biggest shift. Minecraft starting out as a .jar file allowed for reverse engineering and modding support became a huge part of its "culture". Coupled with artists focusing on spritesheets, you got to have that same Newgrounds online underground scene but for the next generation of kids.

Roblox is takes a similar place now that Minecraft is ~15 years old and all "grown up". Maybe once Roblox hits that similar fate this new Flash will be ready to fill its shoes.