I disagree. Godot, Unity and Construct are all examples of tools that are both easier to learn and less costly in 2020 than Flash authoring tools were in 2006. They export HTML5/WebGL games that can be hosted for free in a few clicks on itch.io.
I think the prospects for an 11 year old hacker creating their first game with unity or godot are much higher than they were in 2006 with flash.
Look at the submissions for any itch.io 48 hour game jam and see how many of them are playable on the web, and created by people with very little experience. These prospects have moved to places where they're more accessible, not disappeared.
Here's an example where 1158 web entries were created in a weekend.
https://itch.io/jam/gmtk-2019/entries
For a jam with no prizes.