That is not true. It is a fair criticism. If you brand the game as a D&D game, people will expect a D&D game, and fans of the source material will expect a familiar system.
Which one? Because again, you have different opinions about which D&D system is the "right" one right in this very thread.
It's not fair in the sense that it's outside of what the game is. The second Cloverfield movie was quite different from the first, and the third was quite different from both the first and the second. You can insist that Cloverfields 2&3 still be shaky cam, run from a giant monster movies and write off anything that isn't that. Or you can evaluate those movies on their own merits as successes or failures at what they are.