>> XUL / XPCOM had significant, tangible problems.
> Significant problems that could have been fixed
Mozilla agreed with you for a long, long time. But we eventually realized that while yes, we could continue to keep fixing those problems, that the opportunity cost was large: fixing XUL issues was taking the place of improving stuff that web pages actually use, and it would be better to not be splitting the effort both ways.
(I work for Mozilla, though mostly not on the stuff being discussed here.)
Mozilla agreed with you for a long, long time. But we eventually realized that while yes, we could continue to keep fixing those problems, that the opportunity cost was large: fixing XUL issues was taking the place of improving stuff that web pages actually use, and it would be better to not be splitting the effort both ways.
(I work for Mozilla, though mostly not on the stuff being discussed here.)