By "escalate" I'm assuming you're suggesting that
either this could kick-start a craze of people porting Nintendo games to PC, or an abrupt DMCA by Nintendo. Probably the DMCA, if Nintendo hears enough about it, they'll probably try to strike it down. This the second time I'm hearing about a pc port of a Nintendo game. Brings this to mind:
URDE is a fanmade open source port of the legendary 2002 Metroid Prime to PC. It's been compared to GZDoom in that you'll need a copy of the game itself to get it working. Even though it's still a work in progress it's looking good so far and it'll probably be finished. It might end up like AM2R, getting fully released then DMCA'd, because Nintendo are a bunch of dicks.
One last thing I'll say about that though.
Even if it ends up DMCA'd by the assholes at Nintendo, it won't matter after these ports are finished.
They tried killing AM2R, and failed miserably. Not only can you still get the game with a simple internet search,
it's still being updated on the AM2R subreddit. A new group of developers found out the source code and picked up the game's development after the originals left.
They tried killing Pokemon Uranium, and also failed miserably. Similar to AM2R, you can get the game online with an internet search, and it's been updated numerous times by a new development team.
Wouldn't be surprised if those selfish fucks try to kill these ports after they're announced done. However, the minute it becomes popular and accessible
there will be no stopping them from being picked up by someone else. No matter how much legal bitching they do.
Same thing will probably happen with the M64 port. I'm not sure if I'll play this because M64 was never something I got into, it just looks kinda meh. I'll probably download it for the sake collecting shit people want gone off the internet.