Monero does have a limited supply. It's limited to 0.6XMR added per block (average 2min per block) for infinity. This means the rate of supply increase trails asymptotically to 0 over time. This supply increase rate is already lower than gold and will continue to be so forever.

Also consider lost funds, which assuredly are a high chunk of total supply, making this supply increase rate either null or still net negative on total circulating supply.

Is gold not suitable for long term savings? If it is suitable than Monero crushes it with its superior monetary policy.

A limit is not a cap, you can have a programmed tail emission. That's still limited in its supply increase. Saying it doesn't have a limit is straight up deception and it's laughable that you cope about that.

This tail emission is essential for maintaining a low fee environment and high liquidity as the network scales, something that basically killed Bitcoins viability as on-chain cash after the blocksize wars.