Mind you I say this as someone who long ago lost interest in most of the practiced tactics...
...but this seems to be something you're seeing within HSC land. HSL and then HSM has continued to embrace and push it's tactical capabilities (granted, sometimes to an annoying level). This isn't meant as a dig on HSC land, just something I've been observing for the last 14+ years. My point is that I wouldn't say "the helo community as a whole," as that's just not what I've been seeing on both coasts and through multiple tours.
Now, actually executing many of the missions practiced? Yeah, I'm with you. Something I've complained about for a very long time.
Eh, I would say it's an HSM/HSL issue also from what I've seen. We push tactical capability in my squadron pretty heavily (not necessarily uniformly across the community though).
I think the latter is something that CANNOT be overstated. Not actually executing the missions = tactical retards who think they know everything when they really don't have the first clue because they've never done it. So you're telling me a JO who did nothing actual but vertrep and plane guard during their first tour and then get orders to NSAWC and get their SWTI patch is now an ASUW, SOF, CSAR badass/SME? I'm gonna go ahead and have my doubts.