You cannot attrite 40% of the company in 5 months, without creating an incredibly toxic environment. Dorsey knows this; ultimately he lost Twitter over his inability to right size it. I would bet dollars to donuts he promised himself he wouldn't do it again - under no circumstances is 40% cut over six months preferable to a clean fast cut.
What is the age distribution of employees at Block? I'd guess it skews quite young. You won't have much natural attrition or interest in early retirement. And in this job market, voluntary severance is also not very attractive.
Young people love to be paid to switch jobs too - who would refuse 20 weeks of doubled income? From Squares perspective, this would lead to an adverse selection, because Square would lose the people who can easily get jobs elsewhere.
Sure but 5 months isn't the comparison. They state that they're cutting early. We don't know the exact position, but perhaps over 2-3 years would be ok, and 40% in 3 years isn't unheard of, particularly in the valley, and particularly with incentives.