If you are trying to use partial download for the physical version as an equivalent to not getting the game at all, you are severely reaching. And I say that as someone who frowns on the practice of partial downloaded games.
It is an old game that does not justify any form of a download.
it is no different to those games where they sell you two games for the cost of way more than one and and one of them is just a download code
What you said is a reason to be indifferent. Your not buying the game for that reason is not a reason to be against the port coming at all, which is the topic of discussion. Especially when many people buy games digitally on Switch because of how well it works portability wise.
I hate GTAV and would not bother with it, but that does not change the fact that popular games being added to the library of the Switch is only a positive for the device itself. And with that I reiterate, there is no reason at all to be against the port coming over. You said it yourself, it is an older game. It should be relatively easy for RS to do with minimal effort on their part as well.