Part of the problem with ports of sim racers like this is that the core of the gameplay relies heavily on the physics systems, and that's something you can't really cut back on, and physics simulation is heavily CPU intensive. So, in order to get the game running, you have to sacrifice a lot on the graphics side to keep the game intact. Obviously it could look better than it does, but it's not a total shock to me that a game like this looks as bad as it does, especially considering that the WRC devs are a relatively smaller team compared to say, Codemasters. Then again, the Switch version of WRC9 looks better than this from what I've seen, so this port is definitely a bit of a mess. Especially with the lack of analog triggers on Switch controllers (I know you can remap analog throttle to the right stick, but that always felt awkward in my experience).
This is where licensing rears its ugly head I'm afraid. Of EA's last gen racers, only 4 by my count (NFS Hot Pursuit 2010, NFS Most Wanted 2012, NFS Rivals, and Grid Autosport) are still for sale, and of those, 2 are already on Switch, with Most Wanted being the only remaining one that I see getting ported at some point. With how conservative EA is with Switch ports, I can't see them spending the time and money to renew the licensing for these older games (not to mention that few are gonna be interested in stuff like old F1 games) on top of the porting efforts.