It needs to be congested. The block reward vs fee differential is not high enough to survive a hash war against the cantillion pyramid.
Discussion
Caveat: it needs to be congested with transactions that central banks and governments don't want you to make. It needs to be so congested that the fees are high enough that the market will out-hash the state.
Otherwise it dies in a hash war, especially since so many people seem to be falling for space boy's narrative, which in reality is that "we need the US military to have the capability to destroy Bitcoin, or your children will die".