Hey, I was just answering the question you asked!
Not true. RNA is much more relevant, especially to any discussion of first cells. Evolution acts on any replicating, variable units, including bits of computer code.
I wish we’d had you around when we were trying to figure out the whole ‘body plan’ definition/argument a few weeks ago! If you’d like to take a look at the thread and offer your opinion, I’d love to hear it!