> It's because it's mandatory that it should be front and center on any list of specs.
Eh... I could go either way on that. Spec sheets and marketing copy for these things don't include the phrase "Runs on electricity!" because that property is effectively mandatory. If ECC is effectively mandatory for enterprise-grade networking gear, I can totally see not mentioning it.
On the other hand, I'm pretty sure it's -infuriatingly- not at all mandatory for SOHO/"prosumer" gear, so it's important to mention for things you're selling in those markets.