

Yes but in that site it’s also this:
Error Code: 2819-0003, “Play is being suspended.” This error code usually indicates that your Nintendo Account is being used to play your digital content on another console. You cannot use your Nintendo Account to access games on multiple systems simultaneously. For more details, read Error Code: 2819-0003.
I agree with the person you replying, but not exactly with you.
You see even if you don’t have the dlc and patches with cartridges, you have something. 10-30 years from now, if Nintendo closes the eshop, like they did with 3ds, and your console breaks meanwhile (or you forget/cant download all the games you own), you are done. You have nothing. Same goes for Playststion, Steam etc.
Yeah digital games are convenient, but the only thing i know that offers some preservation/redundancy and is legal today, is GOG.