Yes and no.

Supply for Bitcoin represents how much is distributed.

It will still exist even if there's no demand for it. To give you an example, cancer cells or stardust from light years away that cannot be put to market.

Supply to market doesn't necessarily mean both parties are willing buyers or sellers. I can force you to "supply" me Bitcoin with a $5 wrench

Fixed quantity of something doesn't necessarily make it more valuable, this I wouldn't agree as well.

It's a matter of what it is and what does being limited mean to its subjective value proposition and objective functionality.

For Bitcoin it's quite a fundermental element.