Can confirm. I have a Rupert J Farnsworth III name, and no one calls me that.

My background check and extra check and mili check and squirrell check and all that? Steve Guppy aka Rupert J Farnsworth III is cool.

My bank readily accepts cheques addressed to my preferred name. Our IRS emulant has all that stuff. It was only 2 years ago my new employer mandated deadnames and it's been a constant struggle to bring their Plano/Delhi asses into line with anything modern. People say "Rupert! Bwahahaha" when it pops up.