The FSF can stand on principle, but most of the developers who are employed to work on Free Software don't wish to follow it into irrelevance and oblivion. The FSF can advocate for its principles and philosophy, but ultimately it has painted itself into a corner where it has no skin in the game for the impact of the strident interpretation of those principles and philosophies on the developers whose jobs depend on Free Software projects.
The FSF is happy to take credit for the impact and benefit of the GNU Project software packages. And happy to raise money for its efforts based on the impact of the software, although the efforts primarily are advocacy for and enforcement of the licenses, not support for the success of the software projects. The FSF and its advocates mostly are concerned about the purity of the ideology. Anyone or any project that deviates is an apostate.
The FSF and its leadership explicitly have stated that they have inhibited innovation in deference to the ideology. When Free Software was the only option to counter proprietary software, maybe that made sense. With a plethora of Open Source licenses and an explosion of Open Source projects, a reactive approach of waiting until the FSF is forced to allow a technically competitive feature is a losing strategy.