Exactly. Constructive criticism is valuable when well done and a part of doing it well is showing how things can be made better. Critical Theory is against articulating a vision based on data and outcomes for a better or more flourishing human society. All of this looking back and criticising the past and calling everyone racist is pointless, there's nothing that can or should be done about what our ancestors may or may not have done.
Discussion
Critical theory and political conservatism (at least in the US) are similar to me in that I see both complaining a lot, but neither are good at articulating any positive vision.