Just seeking to clarify whether your opinion of the game is worth listening to, i.e. derived from first-hand experience.
The fact that you consider MGS an action FPS speaks volumes - it's actually a TPP stealth shooter (as is the primary game-mode I play in PUBG, although first person view is available for those who wish to play that way, although the modes are separated. You can FPP on some TPP servers at least, but you're at a disadvantage.)
So yeah, if you haven't actually played it, your confidence in the nature of the game is questionable, as, therefore, is the validity of your conclusions.
The fact that you consider MGS an action FPS speaks volumes - it's actually a TPP stealth shooter (as is the primary game-mode I play in PUBG, although first person view is available for those who wish to play that way, although the modes are separated. You can FPP on some TPP servers at least, but you're at a disadvantage.)
So yeah, if you haven't actually played it, your confidence in the nature of the game is questionable, as, therefore, is the validity of your conclusions.