This claim is so bad.
You could look at the name AbstractDestinationResolvingMessageTemplate and the useful information they would be gaining is that it's a message template. They would still not know how to use it; they'd still have to do an additional step like checking the documentation on its usage etc. The amount of useful information to text is small and it doesnt help.
I'm 95% sure that all those people complaining about Spring never read the reference documentation. I did, and whenever I bump into a problem I have an idea about how to solve it. Besides reading it only takes a few days and you're set for years.
Why do anybody expect to be able to work with a technology if they don't bother reading the documentation? This is like complaining about not being able to drive a car when you sit down in the seat without training.
You're throwing out some very large assumptions as well.
Spring used to be a bad example yes, but not anymore. They really put the thought and work into fixing its design. Right now I can write an app __completely__ independent of Spring. In fact that's what I'm usually doing. You can do Clean Architecture with Spring now. Please keep your facts straight.