I know nothing about brewing but two beers at 5.2% and 4.3% are to me different beers.
As for Porterhouse and their tasteless lager (which one is it?)that is pragmatism. The sales of the tasteless lager probably pay for most of the other range of beers.
I personally don't care too much who brews my beer as long as they are legal, treat their employees well and respect their suppliers. I do not buy into the idea that macro is bad and micro is good. I drink Beamish as my beer of choice, would it improve if it were brewed by a micro?
Goose Island make some very good beer, did they "sell out"?
Fullers brew in and supply a city of some 8m people, that's pretty macro to me.