IRS FAQs for W-4 say both that it’s not mandatory and how they’ll treat it if you just sign and return as in the example
I don’t believe a W-4 ever goes to the IRS, it just tells your employer how much in taxes to withhold from your pay. IRS doesn’t care, until it’s time to file taxes, then you’d better have complied with all tax regulations
There’s a HUGE difference between falsifying information (lying) on federal forms, and not having your employer withhold taxes on your paycheck.
IRS FAQs for W-4 say both that it’s not mandatory and how they’ll treat it if you just sign and return as in the example
I don’t believe a W-4 ever goes to the IRS, it just tells your employer how much in taxes to withhold from your pay. IRS doesn’t care, until it’s time to file taxes, then you’d better have complied with all tax regulations