Plant based fats is what the study gives the thumbs up to, and uses nuts as their reference source, The Professor running the show is paid directly by the Walnut and Dairy foundation, so is not exactly isolated from this statement.
We should remember that some recent studies have established that omega-6 fats are not beneficial to us humans, and omega-3 fats are better. The first type of fats is found predominantly in vegetable oils and the second ones are found in animal fats especially oily fish. The B vitamins come mainly from animal sources, and can be rare in vegetable foods unless they are fortified as our flour and bread and cereals are in the UK.
Red meats expecially processed meats that use nitrite or nitrile preserving methods are indeed getting bad press at the moment, The same should be levelled at fish and cheeses that use the same processing, in fact anything that is labelled as 'smoked' since this is only an added flavouring that may be harmful to us.