Given how important deal flow is to both Angels and VCs, and given that Angela invest in a FAR higher number of deals, why do angels keep such a low profile? Ar

Given how important deal flow is to both Angels and VCs, and given that Angela invest in a FAR higher number of deals, why do angels keep such a low profile? Aren't they concerned that they'll miss out on hearing about deals because the founders can find or contact the angels?