Gresham’s Law is not about “bad money driving out good” in a free market. It is about fungibility loss under fixed legal tender rules. When coins had different gold content but the same face value, people hoarded the purer (less debased) older ones and spent the debased (new) ones. Bitcoin and fiat do not have a fixed exchange rate, so Bitcoiners saving sats is not Gresham’s Law.
What we see here is an attempt to control the narrative, framing Bitcoin as a competitor to gold rather than the USD, because few people use it for everyday transactions. This is not just a simple slam/dunk from Bitcoin haters. Sound money theory states that money is a market good like any other, with its value coming from its use in exchange. The greater its demand for trade, the more valuable it becomes.
This applies to fiat as well. The USD is the most valuable fiat currency not because of any special monetary properties - it gets debased like all others, but because of its demand in global trade, enforced by its reserve currency status.
If people do not start spending Bitcoin and demanding it for all kinds of products and services, it will never challenge USD dominance. At some point, scarcity alone will not be enough. Without strong monetary demand, scarcity becomes meaningless.