When I lost my job, someone I knew at the C level in a different industry put me in touch with a guy closer to my field. After we introduced ourselves he said,

"After hearing X describe you, I was expecting a deep bass voice."

The conversation faltered after that.

Yeah, yeah, you can write the guy off for being superficial, but I'm the guy who needed the favor, and all the help I could get.

First impressions matter. I'd absolutely have used a voice alteration tool to make my voice deeper on interviews; people respond differently to bass.