Having read the LSP specification, and when I take into account just how many things LSP does, I think a 285-page spec is really tiny. I have specs on my work computer with TMF and CAMARA specs that are nearly 100 pages just to talk about the operation of a half-dozen methods--and there's still ambiguity in them at times.

Coupling that genuine brevity with the ability to avoid serious backwards-compatibility problems makes this charge feel pretty outlandish, TBH.