To be honest, I seen many systems, which have hardware smoothing of pixels, some monitors have this tech and some notebooks. And I don't know, why now this tech

To be honest, I seen many systems, which have hardware smoothing of pixels, some monitors have this tech and some notebooks. And I don't know, why now this tech is become so rare - Shaders do smoothing of pixels very well and it is easy to implement, and usually, have enough spare hardware. It is looking strange in cases of GUI with many details, but in old games it work mostly ok. And unfortunately it was unavoidable, because many old games don't accept modern "wide" resolutions, in best case just cut screen, so wide "ears" remain unused. But with hardware smoothing, it is possible to run with top strip cut, which is sometimes better than with black "ears" and with unused screen space.