Matt had a complex relationship with a lot of people, and I think it's correct from Curtis' part to paint Matt's character as truthfully as possible.
I loved Matt dearly, and I think he'd approve of Curtis' post.
i read that as a R.I.P at most but not a "rip" as in "mean". People have traits, some not always good, and that post seems to be a friend talking openly about both the positives and the negatives, not a stranger ripping on another stranger.
It's like three weeks in the making with counterpart review. Pretty far from same day rip-on.