Yes that's true, and I think that people who are already comfortable with the older types might find them, in the last analysis, better in terms of being very full-featured, but some new adopters tend to find them a steep learning curve at first. But all Garmins are pretty comparable in terms of actual performance, and the new ones have some advantages especially when looking at a long tour away from home. They have much more capacity for stored Tracks, and much more flexible map handling.
You would be able to do route planning, maybe even map downloads, mid-trip in an internet cafe, and get new routes and maps into your GPS. You definitely can't do this with the older HCx style.
But don't let this put you off an HCx if that's what you've decided on - they are very good and the rubber band thing definitely shouldn't be seen as a deal-breaker.