It is true that mining tends to reduce the value of a btc, but the effect is small because most of the btc that will ever be created (mined) have already been c

It is true that mining tends to reduce the value of a btc, but the effect is small because most of the btc that will ever be created (mined) have already been created: there are already 18.4m, and there will only ever be 21m.