It's not like Foveons are objectively better for satellite imageries and military "electro-optical" cameras, it's bit of a digital camera equivalent to reversal

It's not like Foveons are objectively better for satellite imageries and military "electro-optical" cameras, it's bit of a digital camera equivalent to reversal films and DSD audio. The two main gotchas of Foveon sensors in its days(so far) were while SIGMA maintained that Foveon pixels are worth 3x Bayer, the sensor resolutions were consistently 1/3rd or less than competitors to begin with, and also that the sensitivity was atrocious. ISO800 was pushing it for early models and recognizable colors at ISO3200 in later models was an achievement in its own(they lose chroma before luma). Fujifilm did better than that in films! SIGMA Corporation in Japan was virtually the only user of Foveon sensor, in their DP and SD series cameras. Photos taken with e.g. dp2 Quattro in 50mm, DP1x in 28mm are easily found on Flickr. To me a Foveon image looks like it's taken through a piece of radiation shielding glass and later color corrected, which I'm guessing to be close to literal description as the color components are indeed captured through preceding luma and first chroma layers.