You went a bit too far back, I was talking about compiled languages intended for the web.
There is nothing easy sbout decompiling native code, even before we start with jumps into the middle of instructions and polymorphic code. Reverse engineering obfuscated JavaScript is orders of magnitude easier than that, and most minified JavaScript isn’t even obfuscated.
The only saving grace for Webassembly is that it requires keeping stuff in blocks, with if, then, else, etc. reasonably delimited, and (I think) it doesn’t allow too many shenanigans with indirect calls. But stuff like br_table, doesn’t make me particularly eager to tackle decoding what someone meant.