I don't think so. There was a dip in success rates for 90 minutes today, but nobody should be renewing their certificate within 90 minutes of expiration. If you're at that point, something went wrong weeks ago.
You obviously haven't worked with hardware guys.
"I mean, what's the point of those last 30 days if you need to renew it 30 days before expiration? Why not just renew it before it expires? If I'm required to renew it 30 days before the expiration date then the expiration date is a lie, isn't it?"
Many countries won't let you enter if your passport expires less than 6 months after your planned departure date. Basically the effective validity of a passport is 0.5 years less than the period you pay for.
How long do you think a certificate lives?
If you're one of the few early adopters of short-lived (6-day) certs you should renew at 3 days, giving you 3 days for a successful renewal. A 90 minute outage, even if it was a full outage, would not interfere with a successful renewal.
Apparently certificates are becoming OCSP-only with a TTL.