Analog Tape Impulse

Show me how to do that.

He doesn't mean you can achieve a tape effect, he means you can achieve the same effect a tape machine IR will get you,
Since a tape machine will vary its compression and distortion with what signal is put into it, it can't be simulated with an impulse so easily, it takes something with more variables.
If you do an IR of a tape machine you might as well do a slow sloping low pass filter pretty high up I'd imagine