I don't think a person's exact name or part of it should ever be the email. If a company did require that then you can misspell or abbreviate a part of it in a way you never do personally. Then at least you can tell where incoming spam bought or stole its info.
The days of being proud and excited to own [email protected] are long gone....
You can do misspell your name in your email if you are the one making it. I don't personally know how things works in your place but in my place usually if we got a job ("officebased") or even some "remotebased". They are the one responsible for creating your own email and yes having marysmith@company still existing in the industry. They even put all your details on your google or microsoft account.
That is a world I am not in....