Razer's marketing is full of hyperbole, often bordering on outright lying. Many of their statements are obviously made to be misinterpreted so as to make their products appear to be more interesting than they really are.
They are a dishonest, shameful company.
Never mind that their products are more flash than quality. Their conduct is reason enough to avoid them.
Anyway, the reason why Razer moved from Cherry MX to Kailh for their keyboard switches has more to do with Cherry's supply problems a couple of years ago. They were just too popular.
Other keyboard manufacturers, such as Cooler Master have said that they had to halt production now and then because they just couldn't get enough switches.
Before the resurge in popularity, Cherry made them mostly for customers who needed to manufacture keyboards for special applications.
Remember, Cherry's MX switches are not new: they have been making them since the 1980's -- and some of Cherry's manufacturing machines are that old and some more recently produced switches therefore exhibit more friction than switches that you could find in NIB keyboards from the '90s. Cherry seems to have improved their manufacturing a bit in the past couple of years though.