It isn't fine, though. Not for the trees and insects. If trees bud too soon, then freeze, there won't be fruit. Insects generally follow the flowering plants, but if they do, and a hard freeze kills them off, there won't be fruit or bees for later crops.
It isn't that nature won't adapt: it's that we are adapted to certain cycles and food crops that were developed in stable climate patterns.
It's the rate of change and the volatility that makes these April heat waves very worrisome; and the storms that are generated by the volatility.
A wake-up call indeed, but most will just hit the snooze button and roll over.