MixTum is a sort of whitelabel mixer operating on behalf of Jambler.io. On Jambler's website they have a
diagram showing that all BTC that passes through their platform is evaluated through a scoring system. When you look at how their scoring system works it explicitly states that they use blockchain analysis.
You forgot quoting the important part:
This stage makes it possible to terminate attempts of unfair investors to use an investment admittance as a mixer in order to clear their money and gain profit at the same time. Jambler.io does not capitalize on return of cryptocoins which haven’t passed the scoring check, it is a necessary security measure.
Jambler is an investment-based mixer, where users can choose to provide liquidity and take a commission from mixing. It's very reasonable that they analyze the blockchain to prevent an investor from clearing their money and gaining profit at the same time.
As an update to my little friend Kruw, who's
really interested in the integrity of the services we advertise here, I've changed my mind about Mixtum after a conversation I've had with my campaign manager, and after a thorough research of mine. It's very likely that they're having strict terms to avoid sanctioning as they are considered money transmitting service.
As for your insistence that Mixtum is a blockchain analysis company: that doesn't even pass the laugh test. Someone who does blockchain analysis doesn't mean that's their product.
