Yes advertisers are only publicly insulted not sued : “Many of the largest advertisers are the greatest oppressors of your right to free speech.”
I suppose that’s meant to inspire confidence they will not be sued, only slightly bullied if they come back.
Because the networks did not respect the production seasons when broadcasting. Production seasons are designedbby show creators to be a cohesive whole, with an order. It makes sense to go back to this when releasing DVDs and not stick with random broadcast seasons.