For a service like AWS, 75 mins is going to result in a LOT of COE's for people on way it wasn't mitigated quicker. A Sev 1 like this has an SLA of 20 mins to mitigate impact. Writing about these failures will consume a dozen peoples time for the next 6 weeks.

I have 10 years of experience at Amazon as an L6/L7 SDM, across 4 teams (Games, logistics, Alexa, Prime video). I have also been on a team that caused a sev 1 in the past.