They unfortunately sort of had to rush it. They needed to deprecate legacy extensions, because the majority of those are multiprocess-incompatible and they need

They unfortunately sort of had to rush it. They needed to deprecate legacy extensions, because the majority of those are multiprocess-incompatible and they needed multiprocess to stop the bleeding of users. It's really quite visible, multiprocess was rolled out in Firefox 48 on the 2nd August 2016: https://www.netmarketshare.com/report.aspx?qprid=1&qpaf=&qpcustom=Firefox&qpcustomb=0&qpsp=202&qpnp=25&qptimeframe=M https://www.netmarketshare.com/report.aspx?qprid=1&qpaf=&qpc...