I remember reading that in Serge Langs Algebra book. I think he used the term general abstract nonsense.I've never been able to find a cogent explanation of what 'abstract nonsense' means (I suspect that it is an utterance indicating vague distaste, sort of like a moral claim), but much of it is totally practical if you know what it's actually being used for or what it does. Typically most of the applications are in computer science.
But, in one of Du Sautoy popular book he quotes Siegel said that the bourbaki trend is going to destroy Maths and he complained his work is being rewritten in the theory of empty sets is ugly. According to the book he said that I see a pig broken into a beautiful garden and rooting up all flowers and trees.
Selberg also said something similar. Chaitin also said something similar, but more he was complaining that abstraction was taking away the need for English and that less and less words are being used.
At what point does abstraction become nonsense. Like abstraction just to be abstract. Sort of like art needing to be shocking, so every piece becomes more and more shocking. So you have classical art that is really beautiful and then modern art that is stuff like beds or rubbish stuck together.