But faster overall, one code base front and back, and it will only improve as new WebAssembly features roll out (js-string-builtins, Memory64, eventually component model DOM access).

And any high performance functions you need on the front end will be higher performance than JavaScript. Like bloom filters for example: https://nuenki.app/blog/bloom_filters_optimisation

> But faster overall

Only in further updates to the DOM. There are very few use cases where you need to continually update thousands of DOM elements.

For most use cases, start up time and memory usage are really the most important metric.