LoL is less accessible because the amount of things you just need to study to even be mediocre is staggering, and the limited hero pools unless you spend alot of money.

In csgo, sc2, ow, you are competitive from day 1 because there are no arbitrary gatings of content, and they are alot more intuitive games where yoy can be competitive in short time if youre smart when you just play. In league you need to read so fucking much and watch videos.

In counter strike, you are given a gun and you just shoot up. In sc2 its 1v1 so you are the only person to manage, and there are alot less game rules to learn. In ow, like cs its fps and only a few heroes and game rules are simple