Yes, absolutely. And no, I don't mean 'oh you should try' or 'oh it's your choice'. No. You should most definitely play RM games. There are only things you can understand by playing another RM game that you won't get from another RPG - the way the engine handles things and how it comes across when you're playing the game.
For example, teleports. Most newbies who have never played an RM game tend to teleport onto the actual teleport event in their game, instead of one step ahead. That's fine for other RPGs on different engines, but for RM, which is tile-based detection-wise, only by playing other games can you understand that there is a better way to use that eventing. There are many other examples.
Another thing - it teaches you what you can and can't do with the engine, what is good design aesthetic that works within the limits of the engine, what to push hard on, what to back away from... all kinds of things particular to the engine in question.
Lastly, RM games are more likely to have those annoying bits that a polished, commercial AAA game won't have. They are just as important for learning as anything else as they give you an idea of what not to do in a game. Slow walking speeds on large, empty maps. Skills that destroy the party easily. Balancing issues. All things that you can't learn about without playing other hobbyists games.
For example, teleports. Most newbies who have never played an RM game tend to teleport onto the actual teleport event in their game, instead of one step ahead. That's fine for other RPGs on different engines, but for RM, which is tile-based detection-wise, only by playing other games can you understand that there is a better way to use that eventing. There are many other examples.
Another thing - it teaches you what you can and can't do with the engine, what is good design aesthetic that works within the limits of the engine, what to push hard on, what to back away from... all kinds of things particular to the engine in question.
Lastly, RM games are more likely to have those annoying bits that a polished, commercial AAA game won't have. They are just as important for learning as anything else as they give you an idea of what not to do in a game. Slow walking speeds on large, empty maps. Skills that destroy the party easily. Balancing issues. All things that you can't learn about without playing other hobbyists games.

