I imagine this will be a huge hit to Clear, assuming Delta was paying for these memberships on behalf of DMs. I imagine most people don't value it enough to pay for it, (including me) as my local airport doesn't even have Clear, (JAX) but I have enjoyed using it when flying out of other airports. Problem is that there's only been approximately a 5 minute savings, (at best) compared to PreCheck.
I won't be renewing at $130/year or whatever the "discounted" DM rate is.