Stacking for our children's children

Only 1,130,996.9 are left to be mined. The effect of halvings compared to the total issuance are not what they once were. https://bitbo.io/how-many-bitcoin/

I didn’t realize that the block reward starts rounding around the 2112 halving. Since it rounds down, does that mean there will actually be less than 21 million BTC, or does it make up for those lost sats in the last epoch?