Yes I'm sure the unlimited puzzles, engine reports, lessons (Even if they aren't good), insights thing, etc etc are all just completely useless
It's all up to you whether you improve or not but a diamond membership will certainly provide you with the tools to do so.
Personally, I don't feel like spending all that money on a chess website paywall when gas is 4 bucks a gallon but if you see the value in it, go for it
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