There's still a ton of overhead for WASM and it's not first class. Using WASM is a lot like using C code in python. It's still nice to have features as first class citizens :)
It amazes me at Python web engineers and Python ML engineers who go along completely unaware of the existence of the other group in any large numbers. (I say this as someone who went to my local pycon 5-6 years ago and was surprised that ML talks were like 30% of the topics)