[jollybean]

I feel this is a bit of an 'algorithmic fallacy'.

If you have a few algs. you need to run under the hood, preferably with few cross domain calls, that can be expressed mostly using a small bunch of native types and not a lot of maps/string etc. then something low-level like WASM might help.

But that doesn't match most real world scenarios very well.

[substation13]

Yeah exactly. Try representing a DOM tree without massive indirection.