The MM has few "properties" yuo can look at:
1. Its a Chopard, for the company collectors. but as a Chopard, most models are quite simple and not interested horologicaly..
2. Its a MM "theme". I don't see too many MM theme collectors, if any. it's not F1 or Bond theme.
The MM doesn't have an identity or firm design language, its a watch with a printed logo. Over the years there has been few designs, cases, sizes movements etc, making it more of a watch with a matching logo, nothing else.
At the bottom line, to each is own and ever MM watch should be considered as a watch that one like or not, as a watch, not as an icon.
If one likes a specific model/variant and price/watch fits? great. nothing more than that. IMO.
BTW My preferred MM is not the MM but the Jacky Ickx with white dial and big date windows.