I'm not on the infra team so I'm not sure; I do know they pay attention to this stuff though.
Yeah, it's not really so much "it's not open source" as it is "Mozilla is the only organization who's really using this stuff". I used to worry about this a lot, but I think we've mostly gotten away from it now that a lot of organizations are using Rust. That is, if Rust was a Mozilla-only technology, I think Rust would have failed its mission. As such, I'm wary of things that seemingly tie Rust back into Mozilla too specifically.
Yeah, it's not really so much "it's not open source" as it is "Mozilla is the only organization who's really using this stuff". I used to worry about this a lot, but I think we've mostly gotten away from it now that a lot of organizations are using Rust. That is, if Rust was a Mozilla-only technology, I think Rust would have failed its mission. As such, I'm wary of things that seemingly tie Rust back into Mozilla too specifically.