I'm sure you're correct, as I'm also sure that they are the largest sector of users of LR.
Amateurs (like me) may be the largest sector of users, but not the largest sector of customers, if you know what I mean.
Adobe don't have to listen to non-upgrading users but to non-upgrading customers.
I'll upgrade Lr 99% for every and each version; not because I'm a 'fanboy', but because it's probably the software I use the most on my machine.
I wan't it to be as up to date as possible.
An OS primitive must be fast and stable: a digital photography workflow assistant should be cutting edge.
Anyway, FWIW, I -do- like the new features and I'm not a photo professional. So what?
As others told better before me, what may not work for you could be a huge time saver for others.
I don't care at all the MB count of the binaries. 200MB or 600MB means nothing to me. 20GB would be critical. My attention lies somewhere else.
My SSD drive (which is meant for Apps and other important files) can accomodate way more than that