Mics have a pretty standard look, and are hard to miss on the board. It would be more insideous if there were cheap film caps leading into a very expensive ADC. I work with with analogue audio, and it’s very important to design around the noise of cheap caps. They are for all intents and purposes microphones and if you were clever about different caps for different frequencies and good digital processing I have no doubt you could build something with comparable fidelity to some of the cheapers MICs in the vocal range.