The alternative interpretation is that Firefox is a particularly effective toolkit for finding OS bugs.
No OS should ever fall over because of a misbehaving application. That's one of their fundamental jobs, and failing at it is a defect. The fact that all the major OSes do doesn't vindicate them; nor is it particularly surprising that Catalina doesn't pull away from the pack. It is, however, disappointing.
> The alternative interpretation is that Firefox is a particularly effective toolkit for finding OS bugs.
That is one way of looking at it. I'd argue that it's not a particularly usefully of looking at it. Ideologies aside, your last sentence says a lot. The fact remains that buggy software from a cross platform vendor is causing this issue across the platforms they provide the software for. Be under no illusion, the issue is Mozilla's a no-one else.
No OS should ever fall over because of a misbehaving application. That's one of their fundamental jobs, and failing at it is a defect. The fact that all the major OSes do doesn't vindicate them; nor is it particularly surprising that Catalina doesn't pull away from the pack. It is, however, disappointing.