This is exactly how I feel about League as well. I am tired of too much change.
You don't have to agree with everything he says. Some changes or reworks turned out better than others but it is the general message. League is not the game I used to enjoy any more because of all the changes for the sake of change and all the changes have burned me out of League. I can't play the game after a break without reading 2 books full of patchnotes, new items, new reworks, new abilities, new keystones, new forced meta with Riots flavour of the week and I am not having the same amount of fun i used to have. A lot of the changes have not improved the game.
I am not going to romantize old League and say everything used to be better but I am just not having fun or getting any satisfaction of playing League and for me the decline of League started during season 5 with the midyear juggernaut and mage update. That was a crucial moment in time where all the changes uppon changes uppon changes started happening and Riot started a new design path and we grew apart.