It's destroying your brain cells in the exact same way doing math is destroying your brain cells.(It really is)
It isn't inherently bad, you're just losing the cells you don't use frequently, so they die off. This is just how brain matures. You have too many neurons, it makes it less efficient to run, so your brain decides to start remove some wiring so it can get directly to what it wants. Does it make you dumber? Certainly not. Is it destroying biological neurons in a scientific since? I guess, but you literally weren't using them anyways. (The actual definition of literally, screw the new one)
It isn't inherently bad, you're just losing the cells you don't use frequently, so they die off. This is just how brain matures. You have too many neurons, it makes it less efficient to run, so your brain decides to start remove some wiring so it can get directly to what it wants. Does it make you dumber? Certainly not. Is it destroying biological neurons in a scientific since? I guess, but you literally weren't using them anyways. (The actual definition of literally, screw the new one)