To be fair, back in the day the PS4 was absolutely declared Portstation. It blew my mind, how games that were just a year or two before released like GTAV, Tomb Raider, TLOU and so on were declared as reasons to get a PS4. A friend of mine literally told me, he rebought a game (I forgot which one) with his new PS4, so that he had to play something at the first time.
But as it happened again with Switch I was prepared. And in the meantime I had understood, that such ports can hold great value for buyers and for the library.
Personally, I don't mind at all so long as new games are also released (both Switch and PS4 have a good number of new games). On Switch, I love being able to play games on the go (in fact that is how I mostly play as I do not have as much time as I used to to dedicate to TV, hence why Switch and other portables are quite important to me) so even ports, remakes, and remasters of older games are great additions (particularly since there are many I have missed out on as I did not have time to play them on home consoles). And of course, the PS4, IMO, has one of the best libraries of all time because of great number newer and older titles that are brought back to life with the PS4's stronger hardware.