[antonvs]

> If you think something is slow then make it faster and open a pull request.

But I want someone else to make it faster without me having to do anything.

[damieng]

In my experience the type of developer using JS for their Web apps rarely overlaps with someone comfortable doing high performance C++ runtime work.

[wiseowise]

In my experience, the type of developer complaining about someone using JS is most of the time is some native C++/C/Rust (neck|grey)-beard. Most of the time they deflect it with "I don't support Chromium/Google" (they never elaborate why they don't contribute to Mozilla).