Firefox 79 process' name displays as "MainThread", not on Mac OS or Windows

I am not sure this is the proper venue for reporting this so clearly feel free to close if not, but seeing as how I didn't see it yet in the open issues thought I'd give it a shot.

Firefox 79 has an issue where in the context of its upcoming (not yet in the wild) integrated process manager, see e.g. https://www.ghacks.net/2020/05/11/this-is-firefoxs-upcoming-process-manager-aboutprocesses/, a change was made that now causes it to display as MainThread in e.g. [c]ps[/c] or [c]top[/c] rather than as firefox or firefox-bin or whatever it should in fact be.

I believe this is a well-known issue of having the process-name equal to the main thread's name, see also e.g. https://nikhilism.com/post/2018/linux-main-thread-name/, but having been around Linux a decade+ ago, I seem to remember/suspect this in the end being an issue of a once explicitly made choice for compatibility with 2.4 kernels.

Given that e.g. Firefox is now running into this, if I'm not just wrong in the first place, is it an idea/option to adjust this behaviour again? 2.4 is a little old now. And/or should somebody from this side get in contact with Mozilla at least?

Firefox bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1649010