I had no idea what 'autobattle', 'heroes charge', 'idle game' meant, and wonder what exactly gets people interested in games of this kind. It doesn't even look like a game in the traditional sense at all - for enjoyment / fulfillment / fun. More like a colorful spreadsheet, with cheap visuals and not even mechanical skill. 'Gameplay' videos on youtube show people flipping cards and clicking through a dozen inventory…
You play to show off fast twitch muscle memory, but you play games like this to show a different sort of ability. Perseverance? Intellect? I'm not sure what it is for each person specifically, but they can be fun.