You are getting completely lost in nonsense.
Those are marketing blogs from SteelSeries. No mouse that costs more than 20 bucks from a known brand made in the last 5 years has a "fake CPI", sensor issues, Native DPI, or any issues with baked-in acceleration. Stating the max physical acceleration stat of any such mouse is total hand waving as far as it would have any effect on your actual usage of the mouse. Unless you are Clark Kent, you are not moving the mouse at 200 Inches per second while playing a game.
FYI Steelseries' own TrueMove Pro sensor / firmware combo features smoothing at higher DPIs, which although not really a problem either a lot of people don't prefer, with both the Logitech Hero and Razer Focus+ and 5G Optical all having no smoothing at all CPI steps.
https://www.techpowerup.com/review/steelseries-sensei-ten/5.html
I notice they don't mention that in their blog.
TL:DR focus less on meaningless mice stats, and focus more on getting a shape, weight, feet, feature set and click feel that you prefer. These will actually have an effect on your play, unlike the technical spec sheet.