While it does have quite a bit of details, this followup issue is clearly written by someone from FB or one of the other AdCos who wants to point the finger back at Apple. The tone and wording used here is rather rich and entitled.
>Who will vet such a list continuously at a global scale? >Apple should. >Apple created this issue in the first place. The need for multi-tenant websites to add themselves to the PSL exists only because of the PCM design decision to limit measurement to registrable domains. The urgency exists because Apple's planned ATT enforcement.
This is a feature needed for sites like Rakuten, Shopify, Alibaba that have multiple merchants under the same domains.
Nothing to do with entitlement.