STG has some quality products, but the ones that they've taken over aren't always treated with the respect that the former makers gave them. In these cases, they rely on the blend's reputation to continue sales. Because most pipe smokers just don't stay informed, and will try Escudo and Balkan Sobranie, etc... based on these blends reputations. And, while what is inside the tin may not be terrible, they are in no way close to what the blend was, nor what the reputation of that blend is built on.
Some guys won't care. They'll buy a book based on the jacket, even if the words inside are not the same.
Some guys just want that connection with the past, even though it's just based on the tin, and not the tobacco.
Some guys just can't tell one blend from another very well, so it doesn't matter.
And, some guys know to buy 20 pounds or more of whatever blend they love so much that they insulated from changes like this that happen.
Some guys will lament and cry when their tobacco is no longer available.
The way I look at it is, MacBaren and Sutliff was wiped off the face of the earth. They're gone, bye bye. However, we are about to get a selection of tobaccos that are fairly close to these that we lost. Some may even like the new one made with cheaper tobaccos. Some won't. I, myself, haven't liked any of the STG clones they make after they've taken over blends.
But, this is not Peter Pan, clapping and moaning for the loss of our Tinker Bell is not going to bring it back. And, I'm pretty sure STG doesn't give a rat's ass what we think, because they know you guys will line up and buy whatever they put in whatever tins they want.
The lions care not what the sheep think of them.