If you look at the linked thread the quote came from [1], the quote is actually answering a similar issue titled "Why are there nodejs files in my zed install". Judging by the response, the dev had interpreted the issue title as a "what does zed uses nodejs for" and not "why does zed downloads nodejs without informing the user" and answered accordingly.
There are more relevant links to PRs and comments further down the GitHub thread (the one in the OP) where the zed devs acknowledge that they are still thinking about how to best implement the UX for extensions downloading LSPs and whatnot.
[1]: https://github.com/zed-industries/zed/issues/7054#issuecomme...
This is just refusing to take responsibility for their decision. "We don't feel like doing it" is the truth, and it would be best to state it plainly. Of course there is no obligation to do otherwise, which makes it strange to play with words.
But even so, without checking the actual Github, it was already explained here [0], before you have posted.