I'm afraid you are off the point yourself.
They are saying that you should not take the report at face value from the very creative MSM. Hence, don't get too excited and take the report with a grain of salt.
No one is denying that there are elements of truth in the report, but they are being cautious with the swallowing the whole narrative with devious agenda and self-serving sensationalism. See a counter article that describes the diplomatic approach being taken so far.
Yes, Likely probably there was some bad actors out there. Yes, there are likely some elements of racism. Nonetheless, there are also valid concerns out there. There are also bad actors from both side of these equation if open minded enough for a more balance view.
Hence, I would like to correct your final statement as below.
China should also take steps against people if they have
wrongfully unlawfully evicted tenants just because they were Africans. The eviction may be morally wrong but authorities can only take action when no law has been broken.