Some people have called this a feature but the deconstruction planner on it's own will mark trees for deconstruction just fine. In terms of bot behavior it's inconsistent, though; bots should only be removing trees if they're in the way of something they want to construct. If I plop down a massive blueprint with lots of miners, the bots should only worry about clearing enough space for the miners that are placeable.
Honestly it's a pretty minor issue for most people... but I'm playing with automatic blueprint placement through mods and this behavior is screwing things up
.