Weight / Fat loss

Isn't it pretty much scientifically proven™ that interval training is better for fat loss than long, steady jaunts?

Better for whom? HIT is not for novices, for one thing. Anybody who is both significantly overweight and unfit is much better of with gentle cardio; vigorous and stressful exercise could injure them and will certainly stimulate hunger pangs. It's a useful technique for people who are a) already fit and b) self-disciplined.

You realise that you are "not doing the programme" right? Well not strictly at least. SS is a beginner weight training programme designed to pack on as much useful muscle mass in the shortest time possible - in the most simple way.

This involves more than a bit of gluttony. Focusing so hard on staying lean and restricting diet will kill the longeivity of the "programme" and the easy novice strength gains you can get by simply eating enough.

This is the simple truth. Coach Rippetoe's programmes are all about strength gains, not weight loss, something he is very direct about. I mean, this is the guy who pretty much invented GOMAD.