If this is going to go forward the every single ADA case is going to have a problem because ALL the cases pay kickbacks to the participates who claim injury in one form or another.
These were securities cases. The legitimate way to do it is to represent some shareholder with a significant amount of stock, such as a labor union pension fund. Milberg Weiss was getting in the cases by paying plaintiffs to go to court, which is a no no. A legitimate plaintiff would make some money on the case and no need to get a kickback.