Are you getting emails asking if you want to be unsubscribed?

In the last 48 hours I've received multiple emails from mailing lists I'm on, saying they've 'missed me' and affirmatively asking if I want to be unsubscribed.

My guess is that this is because my mail client doesn't load trackers, so they think I'm not opening their emails. What I can't figure out is why I'm hearing from multiple organizations all of a sudden (including one that gave me an award a couple years back!).

Did Mailchimp send out a message to their users telling them that a bad open rate hurts them? What else would trigger multiple organizations to send out messages like this? I can't remember the last time I was asked if I wanted to unsubscribe, out of the blue.