This is a perfect opportunity for you to go do some research to see if it was known some cis-candidate changed their name and they weren’t removed the ballot.
Short of that, declaring unfairness against trans people doesn’t hold much water.
And that being said, people are always looking for a way to disqualify their opponents, and so in sure it’s standard practice to look to see if they’ve violated this law to get them removed.
Although, IIRC, it you changed your name because of marriage, that doesn’t count. So either they have to allow name changes from transitions to be exempt, or include name changes because of marriages to make the law fair, imo.