Is heat really that bad for plants?

Is heat really bad for animals? If it's uncomfortable for you, it's uncomfortable to your plants. If it's so hot your productivity is diminished, it's the same for your plants. If it's so hot you get ill, then so will your plants. If it's so hot you die, then the plants will eat you so they can survive the heat.

100 - I've heard of it, don't recommend trying it.
95 - Perhaps ok, Likely not.
90 - Probably ok, but a little less would be better.
85 - Not optimum, but it'll do.

Nice looking bud!