Code changes can be done to print more Bitcoin but that is extremely hard to do. There are strong incentives not to do that and it is never up to any individual party.

Yes, you're right that gold has no hard cap as more can always be found but the high stock-to-flow ratio of gold has held up very well for a very long time. Gold is a rare noble metal and it will remain scarce on Earth.

Both are infinitely better than fiat, which is being debased right as we speak.

Which crypto is more decentralized than Bitcoin?