[II2II]

I believe the point is that there is more than one type of renewable energy. Using the shortcomings of one under certain circumstances as an excuse to pursue nonrenewable energy at the expense of the long-term consequences of nonrenewable energy is shortsighted.

It should also be noted that nonrenewable energy sources also face supply issues. If anything, the issue is worse for nonrenewable energy in the long term since scarcity can only increase with time. Exploration and more intensive extraction techniques only postpone the exhaustion of resources while increasing costs.

(I also find it somewhat ironic that the burning of carbon would most likely intensify the problem in the long run by increasing energy demands and decreasing the effectiveness of renewables.)