What exactly is "tolerance", anyways? Do we tolerate things that are good? Do we "tolerate" the love of a woman, or the laugh of a child? Do we "tolerate" a beautiful day, or the feeling of the sun warming our skin after winter?
Do we "tolerate" a well-cooked meal, or a finely crafted bourbon? Do we "tolerate" breakfast with friends and family?
Hell no. We welcome those things, don't we? We actively seek them out in many cases. We want to have those people and those things around us.
So what is it that we "tolerate"?
We tolerate things that are unpleasant. We tolerate things that are harmful. We tolerate things that are evil, and we tolerate them only up to the point where we can get rid of them. If I have a tick on me, I'll tolerate that only up to the point where I can get my fine tweezers and remove it. If my car has a defect, I will tolerate that only up to the point where I can get it fixed. If my neighbors are throwing a wild party, I'll tolerate that only up to the point where it starts to effect me personally, such as making it impossible for me to sleep.
The point being, you do not tolerate things that are good. You welcome things that are good. You only tolerate things that are bad.
And so by demanding tolerance from you, the Left unwittingly letting you know that the people and activities they demand tolerance for are bad.