Could "Full Name" fields be not mandatory?

Hello, good afternoon!

My question is about the “Full Name” field…
For my purposes, username + email would be enough. I don’t need to have “Full Names” and wanted to understand if they are really mandatory, and why. - And if there is any possible way one can make them mandatory no more.

I remember having a little trouble with mandatories “Avatar” and “Cover” as well; what I did was to assign them (as I found no way they would refuse to be present) and then make them invisible - hiding from Registering and Editing. But the Full Name guy… he seemed to have come to stay.

Thank you in advance!