There has to be a better way to address this because "Why not blind yourself to relevant context" cuts both ways. You said "Always treat every single crypto project as a scam." - but if you ignore all blockchain ideas and still see a healthy and useful product, but ignore it as a scam - that's also blinding yourself to context.
Because a scam product will lie to you in order to look like a healthy and useful product. If you ignore the hints that it is a scam (that it is a cryptocurrency project, where 90% or more of all projects are, in fact, scams), you will be more likely to fall for the lies.
I didn't mean looking at future promises - that's part of the crypto game. I mean if the project mostly does what you expect from it now and continues development towards the rest - why does it matter if people see it as a scam on the crypto front? You're getting the value you need out of it.