It's endless solo grinding manager of a game with heavy immoral monetization scheme that incentivise on every corner the need to pay up or shut up if you want to compete with anyone else.
The part about endless afk grinding is what I like the most about this game and feel sorry for everyone who thought that this is mmorpg, thinking this game is another mmorpg is like wanting to play Soccer siumlator and buying Soccer Manager 2020 instead of Fifa 2020.