This is the first I have heard of the MyRA Act. This is not my area of expertise, but I did find the following. Check out page 3.
https://www.govtrack.us/congress/bills/114/hr4491/text
Liability for tax.
The employer shall be liable for the tax imposed by subsection (a).
(e)Employer requirements relating to MyRA accounts.
(1)In general.
An employer who pays wages to any employee through direct deposit shall make contributions through direct deposit to the MyRA account of the amount of wages designated by an employee who elects to participate in the MyRA program under section 3106(d) of title 31, United States Code.
Looks like a penalty if the employer deducts wages and does not forward the money to the MyRA account of the employee.
Not a "penalty to employers whose workers dont have a retirement account", as claimed by the silly article.