That is incorrect. An 8 way splitter is the same as a swm 8 switch except you can connect a second dish into it. If you have more than 8 tuners you need a swm 16. You do not count the bbdeca as a tuner. I have not heard about the built in wifi deca, not sure if that is true or not.
This is CABL.com posting #340096. Tiny Link: cabl.co/mbADA