It's not necessary always. Every platform has it's saturation point. Just because you have huge budget does not mean you will have to spend it excessively. Wisely distribute it to different channels to bring better result.

Chipmixer proved to be different though LOL. I have no idea why they are spending so much in their signature campaign while even with 150$ a week payment would get them all these campaigners on board. The cost could go half per week. But in anyway, one will only guess that they have few hundred thousands of BTC so they don't mind charity 🤣