mob referring to individuals

Mobster
'Mob' like 'gang' is a collective noun. They both refer to a group or crowd of people. 'Mob' is therefore not used nor interpreted to mean an individual person.
Like gangster to gang, 'mobster' is the word that means a member of a mob.

I agree with Eicachan that "mobs" should have been "mobsters" in the original sentence. By the way, it seems the use of "even though" instead of "whether" in that sentence is a more serious mistake.

"mob" can mean individual person in that "mob" is a large noisy crowd especially one that is angry and violent
eg.A mob of a few hundred demonstrators.
eg.The leadership had been criticized for giving in to mob rule
=A mob controls the situation than the government
eg The usual sc.mob of teenagers were standing on the Wong's corner!
eg:-Each individual has the rights of the individual.
Hence the singular form of the plural word "mob" is a mob.