Seems dated already.
If they gathered this info in July they missed a lot of huge companies signalling tightening for a recession. This will have spread to other companies even if they aren't affected yet.
The 2020 comparison is so obviously flawed. Spending then was to continue business and not optional. Now it totally is. Just extend the lifetime of existing infrastructure. Their comments on cloud are flawed also. Fewer customers means reduced resources needed to handle them. And in most organizations there is room to cut in their cloud bills including killed project infrastructure. The benefit of cloud being opex cuts both ways. It allows quick resizing, so bills can be adjusted quite rapidly. It isn't quite the same a the cost of buying new servers, but it is false to think that cloud costs can't go down significantly.
I imagine Gartner is aware of some of this and doesn't let reality get in the way of publishing something. Deadlines to meet!