Again? How many times do I have to write it?
Multiplayer online means - you can't play a game's multiplayer once the developer or publisher kills it's server(s). There is a reason why some coops I never called mmo - these multiplayers work without internet connection in a home LAN.
Massive mo doesn't mean there are billions of players playing it over a dedicated server right now. It means the server can accept and serve tons of players at the same time. Even if noone ever plays such thing, it's still mmo, what matters is intent, not the number of postrelease flies stuck on the shit.
You took LoL as an example - LoL server will not allow you to join after a certain number of players log in. As long as someone doesn't disconnect and makes space for another player, you'll be waiting for entry. How many thousands are allowed at the same time on the server dunno nor care, doesn't matter. The server sees all those players at the same time and you can also see and chat all of them. It doesn't matter what genre LoL is, obviously LoL isn't openworld grinder, digital card collector, lootboxes scamware or whatever something - as long as server is necessary to play it, it's mmo.
On topic, I didn't write any title suggestion to Alrik. Two reasons.
He plain refuses to watch thrillers for example and I adore those. Once I moved away from Hollywood mainstream I've found so many awsome thrillers it's impossible to number them all. Not saying Hollywood makes rubbish only, for example
A Simple Favor is awsome, but it's just a rare example of great movie among, well, "shovelware".
Another reason is I don't want to watch plain dramas. Usually those bore me to death so I tend to skip them unless someone I trust when it comes to movies explains to me why I should watch one (why is it not same old same old and why is it not boring). Means, I can't possibly know what exact titles would fit his taste. For that there is internet. All I know is that if he stays on the barren field, there will be no fruit to harvest.