I did not say I am not a fan of glissading. I said, you have to know when a safe opportunity exists.
If you have an modicum of experience, you should be able to recognize when a green light opportunity exists. If you rent for the first time at Mt. Whitney and you return to the chute on a cold day the the runs are shaded over, you may not be able to recognize safe glissading conditions do not exist.
I am at six people sliding by me out of control and counting. 3 ended up with free helicopter ride, one lost $1,000 of electronics, one got saved by a snag and one after an unintended face glissade looked the part.
This is serious business and should be taken as such...fun is an extra.