I disagree with @Shareni (sorry!) - the biggest issue right now is that package maintainers are leaving in droves - at least 15 contributors left a few days ago, a number which has likely increased these past few days - and will continue to increase. I think the only people left will be the ones who support Eelco and the toxic culture brewed by him.
What this means is that you risk your packages getting out of date, including slow delivery of security updates (which was already an increasing concern, due to the way the Nixpkgs build system worked). Worst case scenario, some (many?) packages may never even get an update.
So now’s definitely NOT a good time to switch, and in fact I’d also urge existing users to look at other distros, at least temporarily until this whole thing settles down.