(I'll end my comments by pointing out that I think Rails is great. I
hope my constructive criticism is received in the spirit it's intended.)
A second note on this. This is a false declaration of content. Like if
I picked up a jar that said it contained sugar, but was full of
vinegar. The label does not make the content sweet, regardless of the
font size used.
If you wish to provide "constructive criticism" then I'd recommend
using a less flashy banner ("Why ActiveResource will flop...") and
replace hasty conclusions with invitations to debate. That way you
don't even need a disclaimer saying that your vinegar is really sugar.
The taste will make that self-evident.