I’m talking about JavaScript products
If i build a shitty house and it collapses, I own it, I don't write a manifesto about how it's all lumber's fault.
FOSS JS depends on how it’s distributed
As does FOSS C - do you install linux from the source tree and build everything yourself? no, you download an .iso, so you are bound to the whims of the OS maintainer, who have their own interests. When you install filezilla you probably download the binary instead of building it from source - oh no, now you are subjected to the filezilla foundation's nefarious interests (purchasing a commercial support license so they can afford to develop GPL software)
If the FOSS JS is in a public repo and statically downloadable
Literally every JS package I've ever used does this. They have github actions set up to commit the compiled binaries to the dist folder, which is then published to NPM - https://github.com/twbs/bootstrap/tree/main/dist
Frankly this entire post is just a critique of how commercial entities redistribute MIT licensed code, rather than anything specific to JS. Whatever point that could be made here is entirely obfuscated by flowery language