I must admit to doing this the last couple of years myself (though I use silicone tubing).
We all used rubber hoses to our bunsen burners at school.
Yes we did Jim and without any clamps on them. 
Yes, but Bunsen burners had their barbs way down at the bottom far away from the flame on top, where far less heat gets to it. The connector snout was also heavily barbed to better grip the tubing, which was of a special class of "rubber" often with fiber weave reinforcing to resist expansion.
Very much a case of apples and oranges here!
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