That depends on your definition of “worse”.
It is my opinion that China's plan is to break and assimilate the Uighurs. In this way, I believe it is distinct from the Nazi plan to obliterate and eradicate the Jews. However, Beijing's plan to subjugate and assimilate the Uighurs does involve higher mortality, higher deaths, torture, brutal population control and possibly even population reduction to an unknown extent.
The problem is, if their plans are failing or if their plans don't turn out as expected, there's always a possibility that things end up even worse than that. They are capable of doing anything and are very, very ruthless. As a result, the situation is extremely concerning. I would agree with that.