Well yeah, it's a shooter set in the Star Wars universe. The Star Wars part would always be the big selling point.
There may be "hundreds of shooters" out there but by no means does that mean you have to buy them all, or any.
And people warned you against buying Battlefront as it's main focus is online multiplayer, which you admitted wasn't really your favourite area of gaming.
Fighter Squadron is only one mode out of many in Battlefront which is primarily an FPS/3rd person shooter. But it's still a mode Star Fox, an on-the-rails shooter is lacking. That's pretty bad.