As far as i know optifine is not allowed, but i am not sure. If it's not allowed, why?

optifine is allowed in 1.0-1.14, but banned in 1.15+


edit: PLEASE JUST READ THE RULES AHHHH

Is optifine allowed?

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‎**This will not affect anybody who has updated their mods in the last 17 months. If you have updated your mods recently, you may ignore this message.**

We are looking to track every single mod jar that is legal. This is feasible now that we have been tracking legal mods through GitHub. Since we 

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