With gluttony no longer a sin, ‘bigger everything’ is now the norm
Like the Golden Arches reached into your home and said: "C'mere and let me fill you full of grease and salt and sugar." This has to be the ultimate in self-ascribed victimhood. Bit like the gang member in West Side Story who sings "I'm depraved on accounta I'm deprived." These obese folk were saying their fatness wasn't because they ate the pies, but because someone MADE them eat the pies.
Marginalised overweight people don't, unaided, get into litigation against global corporations, so clever lawyers had to be behind it. If lawsuits were beginning to be successful against tobacco companies for hooking their customers on a killer product, logically, the next target had to be peddlers of burgers and fries.