Earlier quoted context omitted.
I think "sprawl" might be a more descriptive term for what you're reacting negatively to. Boston has lots of suburbs that don't fit your description. (BTW, suburb's etymology is not tree-related.)
Yeah to me suburb means tract housing. Does Boston have suburbs that aren't tract housing? (I said tree related because every suburban neighborhood I can think of has a tree related name... "Willow Springs" "Lone Elm Estates" "Pine Ridge" etc.)
http://www.merriam-webster.com/dictionary/suburb
Those names sound like housing projects, not cities or towns.
Boston has a lot of suburbs accessibly by public transportation that have walkable city centers.