Although I disagree with most of the points in your original post, this is true with the caveat that we'd have eaten it up were it improved to the level of DCS modules rather than FC modules.
I think 2 proverbs apply to this SU25T:
"Don't look a gift-horse in the mouth"
"You get what you pay for" (in this case, not strictly true, as we got more).
Edit: Also, nobody's forcing you to play in the SU25T. If you've got the DCS modules, enjoy them. I know I am. I don't know if I'll ever bother with the SU25T, but it's nice that it's there if I want to dabble.