Well, the copy of the valve body without taking the originators name off of it WAS a huge screw up, and they'll pay for it, but chinese copy of other people's stuff is not limited to speedmaster.
Pretty much anything with (my opinion only!) Jegs or Summits name on it will be a chinese copy. The thing is, they also sell name brand stuff from the real manufacturers. So, you have your choice of what you buy.
You can buy a pair of brodix bbc heads (what I really wanted) for $2000 plus, or do what i did. Buy a pair of big port bbc heads, with a single plane intake, cast valve covers, head gaskets, intake gaskets, valve cover gaskets, and roller rockers, for under $900. (I'm sure that kit is quite a bit more now, just like everything else since 2020).
As good as a Brodix topend kit? Of course not!
But the difference in price paid for my roller cam kit, and the speedmaster junk will get my junk to where I want it to run.