Misrepresentation is the intentional concealment of material fact or providing false information in order to gain an advantage in securing a visa.
This is not misrepresentation at all, and not even abnormal in any way.
In his profile, he did state that the experience lasted until 03/2019, which is the truth, and it does reach 2 years March 29th 2019. It's still March, and he received ITA based on that. But the thing is, there is no way to enter the exact day. The review of exact dates to see if he indeed completed exactly 2 years will only be reviewed by an officer based on work letter dates.
So as long as the work letter is dated on or after March 29th, and the application is submitted on or after this day, no problem.
As an opposite example, If he applies before March 29th, work letter will show a date before that, and will mean he didn't complete 2 years. But even that won't be misrepresentation, as he did not lie in his profile by stating that the experience lasted until March 2019. Because again, no way to enter the exact day.