It is because they know the Switch is the first Generation 9 game console. Switch is successor to both 3DS and Wii U, both Generation 8 systems. Switch will have a long life cycle, and it will be competing directly with PS5. PS5 may, indeed, be a Switch clone knowing the track record of Sony.
Generations are important because they mark time. They do not mark ‘technology’. Generation 1 is defined so because all its consoles cannot change their games. This technology was only possible in the latter 1970s.
Also, the NES is not the first game console Nintendo made either. People who talk about video games on Video Game Forum should actually look up their shit. But then again, if they did, people wouldn’t have to come to Malstrom’s Page to learn what really happens.