The immediately answer from LPs will say “no”, since this switch will cut off immediately.
But are they really gonna to do so? Taking economically, A rational LPs will only do it if they can find a better alternatives, which I consider would be very difficult.
It could be another protocol, or another Uni pool but which haven’t selected for this trail.
If the first case happen, then UniSwap has a competitor, we need be careful; if it’s the 2nd cases, there are not much to worries, UniSwap is still the best protocol to stay.
One more thing, those smart LPs, they are wise enough to keep some Uni token in pocket if they going to vote yes. An immediate return on token will surpass the LP income at least a medium long period of time.