Ecclestone, who ruled F1 for nearly 40 years, earlier said that while what Hamilton is doing for the Black Lives Matter movement is "wonderful," he doesn't think that the Mercedes star setting up the Hamilton Commission is going to have any effect on the sport.
A minimum of eight races are required for the championship to be valid, but former F1 chief executive Ecclestone believes that will not be possible.
Sepang chief executive Razlan also slammed Ecclestone for "making us look like idiots".
The FIA gave its approval last week to Liberty Media's acquisition of commercial rights to F1 for $4.4 billion.
