New England hasn't really been "negatively" affected by AGW all that much yet, but that doesn't hold equally everywhere.
Solar panels belong on buildings, not in the woods or fields. The notion that panels are junk in 20 years just isn't true, they are just de-rated a bit, just like any other technology that has been operating for 20 years. Electric cars are heavy because battery and charging technology are still at the beginning stages of serious tech development.
We have a long way to go, but long journeys begin with first steps. There are unrealistic expectations on either side. Patience and understanding will be needed.
I don't think Tip is an "alarmist", he's merely point to the data, which is substantial, and (IMO) conclusive.