I think it makes sense for the official to give the boilerplate "you must rope up on a glacier" line. If you have the experience to go against this advice, you understand the tradeoffs you're making. Obviously, once you've fallen into a crevasse, it would have been nice to be roped up.
I meant the question genuinely- how do experienced ski mountaineers decide when to rope up? Skiing roped up is the best insurance against crevasse falls. But skiing down while roped up almost defeats the purpose of skiing. How much protection against punching through a snow bridge do skis provide? With the recent fall on Rainier, and the fact that I'm starting to think about skiing on glaciers, I'm interested in input about this.