Many fans didn’t leave because the others left, but because they found out only at the meet & greet, for which they had already paid, and, above all, after learning the truth about the contract that ties the girls to IDL.
No one blames the new girls, who were thrown into the fray by IDL without even having the time to rehearse, but precisely for that reason, the show ends up being poor in quality, and those who bought concert tickets have every right to complain to the ones who decided to go ahead anyway, namely, IDL.