I can see lot of YouTube streamers are playing valorant game in the recent days which means this game also have some fan base so definitely in future we can see lot of tournaments related to this game which eventually makes more gambling site includes this game into their betting options.
To make it clear, this game is easier than CSGO which is one of the most popular FPS in esports.
Everyone is streaming it because 1.) it is a new game and 2.) because it is easier so it is easier for them to make plays that their viewers would love to watch and make them popular in a way. Usually, the most popular game is mostly played to gather viewers.
It's a riot game, those people who are playing league get interested in playing Valorant even they're not good at FPS. Riot games is good at making the game very popular and it already has a name on the gaming industry. It became popular it's because popular streamers approved this game like Shroud who's good at different kinds of FPS games.
They say it's easier than CS:GO because of the recoils of the gun and has a different fire rate but for me, the game is becoming more complex as people already know those basics and we can't use that to win the game. Every patch or update, meta changes and it makes the game difficult and requires to think another strategy like bluffing the enemies so I guess, games have it owns difficulties on their own.
You said it yourself, LOL players are even playing this game, which means they can adapt to it quickly since it is easier to play. Either way, META is changing for one good reason, to make the game fair and fun.
Though the problem here is that sometimes they are making some characters or agents OP which is being abused by some players and I think that makes the game bad since people could just spam that and bring himself to the top while those players that are actually knowing the game, trying different characters that are not even in this "META" are not that popular.
For example, the Goats META on Overwatch, that really destroyed the game. It did not make the game more difficult for normal players, even pro players dropped the game because of that. Why? Because there are these players that abused that META. Yeah, they studied, they grind for that META, but just that META while those players that trained for Damage dealers began to fall down and so close to being unusable in that game. That is just sad. I know it is the fault of the developers but if these players really wanted to develop their skills, they will not be abusing that. Just like Dendi's fountain hook.
Also, another thing is that not all of the changes are amazing. For example, the new patch in Valorant improved Guardian though it will not be a META since there are other guns that could do better like Marshal with the cheaper price still and with the same armor penetration, it is usable in the earlier rounds and when you desperately need a round to win and the team's economy is not that great but still, for those players that are reading this:
MASTER USING THE SHERIFF, IT IS OP!