The game has settings for tweaking aim assist and such. It is exceptionally well done. As OP said they ask you if you're playing on a Deck when you boot up, and it even has a Deck specific options menu for tweaking aim assist and what not. I played the first level on my Deck last night on regular difficulty and had a blast. Then I switched over to my PC and upped the difficulty and also had a helluva time there. It's a phenomenal shooter.
So stoked for this, I poured 80 hours into the first season. My playtime wound down towards the end of the season, so I hope they're not discouraged by the lower player count and this new season brings back folks like me who like to bounce between different games. I just cannot main one game anymore. But The Finals has been the most refreshing PVP game in years, since Titanfall 2 imo. I hope it has staying power, and we see more seasons cause Season 2 is looking delicious!