I do think the impact for a new player can be diminished - for example, I've seen a lot of people complain about some older games, movies, TV shows, etc. as being "cliche" without realizing that the reason the cliche exists is that game broke new ground and then everybody and their mother followed them.
That being said, if you enter into it with a mind open to the idea that it is what inspired all of the things that came after it, you can still enjoy a lot of older media, including games, perfectly fine. It's a shame when controls end up being a detractor, but other than that I've had a lot of fun going back to older games. For example, I finally got around to playing System Shock 2 earlier this year, and after reconfiguring the controls to something passable (do you seriously expect me to walk backwards with X and turn with A and D rather than strafe???) I must say I very much enjoyed the experience, and it's super cool to see where future games took inspiration from its systems, mechanics, tone, and storytelling approach.