Human Revolution is cool. Haven't played Mankind Divided but it's more of the same it seems. Invisible War is ehhh.
Deus Ex 1 is like taking LSD and being shown the meaning life.
Tl/Dr: Who cares if you play the new Deus Ex games, the original is the only reason the series is so highly regarded / legendary. If you are looking for a cool modern gaming experience, new Deus Ex will work but you're still missing out on what Deus Ex is. Wait and play the original when you're in an old-school gaming mood.
I like how my tldr is longer than the original content
fully agree. Playing deus ex without ever playing the original is forever missing a big part of the meaning of the series. You don't have to start with it if you dont want to, just try and make sure you get there eventually. The original is still wholly unique even in this day and age. The gameplay hasn't aged well but the degree of choice is unmatched