The phrase "vague generalizations" refers to statements that are not specific or detailed, but instead make broad assumptions about a group or situation without giving clear examples or evidence to support them. Full definition
[B: 208.4 - 209,7 a] 10 That «all things flow» is the first vague generalization which the unsystematized, barely analyzed, intuition of men has produced. (religion-online.org)
And that is aside from the problem that all such short cuts, when lacking a firm and agreed upon definition, are by necessity vague generalizations that can be more of an impediment than a help. (nakedpastor.com)
This candidate avoids vague generalizations and presents specific ways in which he can be an asset to an employer. (resume-now.com)