As someone who is writing a cross platform app, I'd love to, but I can't.

There are too many different stacks with their own languages (which means different library ecosystems), no good FFI/IPC options that work across stacks, massive test matrix for every little piece of the code etc. All of this, when the native differences that supposedly should make each platform unique are so few, and virtually all UI and application logic is identical. Our platform lords have basically not standardized a single thing.

I think it's important not to conflate churn with fast updates. In it's essence the ability to deliver updates quickly (in this case by downloading a blob of wasm+js each time the app is started) is a great thing imo, as you eliminate a huge chunk of problems around delivering updates and clients on old versions. For 99% of users this is a huge win.

You can obviously abuse this by redesigning the UI every 6 weeks but let's not throw the baby out with the bath water.

if they did that then only the most popular platforms would ever be support, happen to use a niche product, or a older product, well your SOL.