I know it's been a few hours, but if you see this, look at the Discord PTB and Canary builds. I run all three (std) so I can keep a number of prime channels open. Hope that helps.
If it is true it would buy ad servers greater obfuscation since blockers were relying on CNAME metadata to differentiate between safe and unsafe targets. If more reverse lookup and secondary metadata and vhost dereferencing is required it will complicate performant ad stripping at a minimum.