For something portable like this, it would be appealing to have Netflix on the go on it. It could be the best screen you have with you, and multifunction means that you can potentially leave some other device at home.
Because it's another expensive device you need to buy, carry with you (+0.5kg!) and keep charged (+weight for all the chargers, because of course iPad won't use USB-C ;) )
I think the larger point is, anyone else would have had it at launch, because it would have been both a no-brainer and no big deal. Netflix is generally pretty good about supporting ports of their client to anything that can run it. There's also no Virtual Console, the eShop isn't available for review yet... and Nintendo has a terrible track record on online services. The Wii U was even further behind on such matters than it was on graphics, compared to the Xbox One and PS4. You can argue that Nintendo shouldn't compete on graphics. But simple stuff like "downloadable games I buy should be linked to my account, not my console" are things they should be doing and have a really bad track record with. So I think Nintendo doesn't deserve a lot of the benefit of the doubt that they will get things like Netflix up-and-running on the Switch.
