As the comment you linked to notes, that doesn't really fix the problem so much as it ensures that the CA's legal team gets to work nights and weekends for the next year.
The legal system is almost certainly going to view future-dating and immediately publishing revocations poorly in any civil action where a customer claims harm.
It fixes the problem of a customer getting an injunction despite what the contract says. If DigiCert doesn't want to be liable for harm they should improve their performance, no try to weasel their way out of the agreements that let their business exist in the first place.
The legal system is almost certainly going to view future-dating and immediately publishing revocations poorly in any civil action where a customer claims harm.