There were three on Sunday, 7.3, 7.6, 7.4, all within about one hour of each other and they over lap. You need to read the latest earthquake list to see it. It does not show so well in the picture.
As someone who grew up in California and have been without running water due to an earthquake, I know I wouldn’t think that is ho-hum. And my earthquake was only 6.8.
You’re right, that could be weird, but when the 5.7 hit on Easter Sunday, it was followed by a couple of 5. aftershocks - the same day, and over the next few days.
Aftershocks of the same size or near the same size is not all that unusual.