the cold weather in ontario right now is consistent with all three potential explanations.

1) we've had a couple of cold summers in a row, here. this is consistent with the observation of decreasing solar output, as it pushes the jet stream down a little.
2) despite the physical errors in the model, it is consistent with the idea that it's being caused by melting sea ice.
3) it is also consistent with the idea that we live in canada, and we often have shitty springs in this part of the world.

my money is on (1). but, you need to look at longer term patterns regarding how the continuing decrease in solar output is going to affect the continuing increase in global mean temperatures, especially in the northern hemisphere. and, the difficult reality is that science can't tell you the answer with any certainty until it's already happened.

but, it is certainly not a reason to reject climate science.