Even if it's not a legal name, are you going to review the CV of an applicant who used a different name on every publication they claim authorship of? It's going to be pretty obvious someone is being nefarious

The CV of an applicant is definitely different. For a job application where a cv were used, that’s a slower/paid process where attention should be paid to details. However what’s a difference to a conference with a “young upcoming author” vs llm-Lorem ipsum author name?