I talk about using Crypsis as one's primary or even only icebreaker because that's the only real point I see in putting Crypsis in one's deck.
You said that the point of Crypsis is that it's "a backup and gap filler".
A "backup" by definition is reactive and depends on a certain situation occurring, such as losing a program; but it doesn't often happen while I already include 1 extra copy of my 'breakers in my deck anyway and don't have a hard time getting to them- thus having a Crypsis backup in my deck is wasteful.
A "gap filler" by definition is a temporary solution to a problem. As such, Crypsis is just expensive to run (card slots, creds, clicks) when the alternative- getting to my more long-term tools- is more efficient, cheaper and not hard to pull of. You spoke of "assembling Voltron" and it was even admitted that using Crypsis will slow that down- and yet assembling Voltron is the far surer and more effective strategy.
So if I already run other icebreakers, why am I going to bother mixing in Crypsis when I can instead use its slot for something else? This is where I disagree with you and anyone else about Crypsis': whatever advantage it provides is actually too small and definitely too costly compared to the alternatives I can do without it.
Going back to my first sentence here, my friend who helped me test my Criminal Crypsis deck pointed out that there's at least one way to make Crypsis the star of its own show: in a Noise deck.
Anarchs provide a lot of stuff to support it's being a virus and- most importantly- Crypsis provides Noise additional virus fuel for his ability. Where a Noise deck is program-heavy, Crypsis can save up on card slots normally reserved for a lot of different icebreakers (meaning you use it as your primary or even only icebreaker). Where Anarch cards lower strength, Crypsis doesn't have to use that many creds to operate. And then, there's Stimhack…
However, all of this has to be tested first.