Yup, rolling in it in the end. Like, if I don’t just spam bonus stuff like extra production or cannons, I’ll usually have 10k minerals on the timed b+ missions. On defensive missions you can also just spam a ridiculous number of gateways for cheap. 10k minerals buys 130 gateways, or 130,000 hp they have to get through before they, say, start hitting the temple or the terrazine bots.
On Void Launch, another trick is to use Solarite Dragoon overcharge then spam “E” the moment the flying units spawn from their tiny spawn points over the gates.