And assuming you meant in the last couple generations, cause last couple years there's just been the Switch Lite, the thing is, whatever choice they would have made for a dedicated or hybrid handheld in the last couple generations, it would never have been as powerful as their dedicated home systems counterparts and this is easily demonstrated as in the last couple generations (Wii and Wii U) there was indeed a handheld available, the 3DS or the DS? Can't remember, but the point is, I don't need to go check specs to know that the Wii and Wii U were more powerful than the handheld systems Nintendo had on sale back in those days.
A dedicated home system will always have a significant raw power advantage over a handheld at the cost of portability whereas a handheld device will always have a portability advantage at the cost of raw power.
Why compare a home console to and handheld one? of course home consoles will be more powerful. You should compare the home consoles to other home consoles, which Ninty has been falling way behind since Wii. Which wasnt a problem because that was their best selling home console. Money talks and the money says they no longer need to make a powerful home console. Hell Switch passed Xbox one. Power doesnt mean anything to Nintendo and I think people need to accept that.