agreed on the “wasting He”, at least until we can reliably make more, and using what we have to get high is stupid.
However, your reminders on reaction kinetics made me wonder if He was being used to lower the kinetic energy transferred in some portion of those collisions, so as to lower the side reactions. Not a valid reason to off-gas He imo, but made me wonder.
Thank you for that. Lots of very useful tips.