They are already in "uh-oh mode" as people are angry and leaving in droves. They sent this out to try and calm those jumping ship. Once someone feels they no longer are invested emotionally in a site, it's easy to leave, and never return.
@TwitterSupport
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13m
To clear up confusion about fluctuations in follower counts: In order to prevent spam, we regularly challenge accounts to confirm details like email and phone number. Until that info is confirmed, these accounts aren’t included in follower counts.

Platform manipulation and spam policy
We want Twitter to be a place where people can make human connections, find reliable information, and express themselves freely and safely.
help.twitter.com
I recall tweeting Jack some time ago after being banned for my 3rd time or so, and letting him know that there are consequences for doing this to people. Advertisers pay for eyes, the more the merrier. I don't swear at people or offend, I simply disagree with the Progressives, even if he is one of them.
As a CEO he is trying to balance the political pressure, much of it, created by the alt-left who want to silence everyone, along with corporations/MSM/China First rats who take their marching orders from the Commies, in one form or another.
Instead of just telling them, "we allow speech, it's up to you to debunk it. We don't silence unless it is encouraging criminal activity" or whatever they need to say. They ban, deboost, shadowban and silence, all to stroke the egos of others.
These companies are being pressured and hurt by the same people they work so hard to appease. Imagine owning twitter shares and seeing all of this?