He thinks porting old games magically takes resources away from teams working on the original games. And he thinks if new games aren't annouced, they magically aren't being made. Plus he thinks that remaking all of a game's graphical assets for another system, even a less powerful one, magically takes minimal effort.

I'm throwing "magically" around here, because his sistements imply things that are so counter to reality, it would take magic for it to be true.

As for this, Nintendo could have just one or two teams focused on these ports one at a time. Even adding content wouldn't take a lot, given that's it's basically like making DLC.

So this is not being done instead of the new games, or getting in the way of those. Nintendo is just announcing them now because they take less time.