The browser doesn’t even have modern JS. Well, I mean it does, but for awhile it didn’t. We consider modern history to be anything past 1815. So in web terms, if you had to section it, modern web history is like maybe 2010 onwards? In those years we transpiled new Ecmascript to old ecmascript.

So, nothing is stoping us from tranpiling Python to new or old ecmascript.

But, I think you’ll see that it won’t solve much. You are just turning one turd into a lesser turd. The problem is fundamentally deeper. The browser and web server tech was not built for app development. That’s the bottom line.