Not my place to tell you what kinda soup you like.

¯\_(ツ)_/¯

He spent decades as a talk radio host, and records in a professional sound studio. I get how the vocal range can be offputting, but it’s a deliberate artistic choice.

That being said, I have run his releases through a compressor (i.e. a software program that normalizes the volume level) in the past for car listening to good effect. YMMV, but might be worth a shot if that’s your main hangup.