“your remarks are without basis, as far as I can tell.”
And her remarks may also be totally without basses as far as we know. That is the entire point. We don’t know enough to be pointing blame at him, or her.
Drawing conclusions about his character based on what she said is totally unacceptable at this point. Even taking her allegations with anything more than a grain of salt is also unacceptable at this point.
What I am seeing on that site is way beyond unacceptable.
You, however, have no downside to your ruminations. The issues in her suit are quite specific, and have corroboration from others, including the builder and the subcontractor that now refuses to do this guy's landscaping.