Earlier quoted context omitted.
What would happen if you lied about your age (eliminate the first 10 years from your resume), both at the time of applying for the job and after joining the company? How much trouble can you get in for that? It doesn't seem unethical at all.
Every job I've ever gotten I had to provide ID.
Directly lying is a problem still (don't tell them a wrong age), but if they come to the wrong conclusions due to fuzzy data?