Nobody sued them over gay leaders.
They got sued by parents over not doing anything about pedos, AND got sued by prospective leaders because they were being prevented from joining over their sexual orientation.
Bill wanted to be a scoutmaster since he grew up with scouts, but since he was gay, he was not allowed. He then sued the organization over it. (idk names, that's just for clarity)
The keys to GAINING power are not the same keys needed to KEEP power.
They gained the power (or will in a few months)
Now they need to keep it.
If one of the keys needed to get it could potentially turn on you, it's better for your regime to eliminate them as soon as possible after taking power.
For a better explanation, CGP GREY has a video about rules for rulers, which clears things up quite well: https://youtu.be/rStL7niR7gs