Rpg Maker, GameMaker, JS itself, Unreal Engine. - it's true Flash gave way to allowing creativity to flourish easier but accessibility has come and gone - at this point it's personal preference and CPU usage that dictate the expanse of your games
I'd argue that none of those can do both the art and programming side of things as well (for beginners) as flash did
I haven't used RPG Maker in a decade, but when I did you had to import sprites, same with GameMaker. JS doesn't help you with art. Unreal Engine has a basic modeller but you have to use Blender which is quite complex for beginners
Flash was like an animated paint, super accessible
