What are free sites that give every user a subdomain for their profile/site/etc supposed to do? There are many open source multi-user site platforms that follow this pattern, and all of these platforms now effectively have a huge monetary subscription fee associated with them due to the fact that you now need to purchase a wildcard certificate in order to not scare away users.
There is no free wildcard SSL certificate service, so Google is essentially forcing you to pay money to not scare users away from your site.
I am all for this change eventually happening, but not until all DV SSL use cases are covered by free services. Until then, this change is inappropriate.
If Google wants to punish sites that can't afford or won't pay for expensive wildcard certificates, then they should offer a solution of their own (like their own ACME CA that supports provisioning wildcard certs).