I suppose a climate change will interact with fungal networks in interesting ways.
Yes; it's tricky to predict. On one hand, fungi tends to love moisture, so long hot Summers might work against them. On the other hand, fungi that parasitise on plants might do better if the plants are drought-stressed and less able to put up defenses.
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We know for sure that there have been multiple climate changes on the planet, all of the previous ones had influences on the animals living here, including our species, so naturally this one will be the same.
The golden question is are we going to be the next dinosaurs, or get lucky this time around?