Uhh, yeah.
Did he wear a biohazard suit as well, and have trusted French officers present at all times to ensure that he left no traces of DNA anyplace else?
If not, then this is just more stupid theatrics.
If the Russians really wanted Macron's DNA, all they'd have to do is assign someone to collect a dropped hair sample, or vacuum up sloughed off skin. It's not that hard to collect someone else's DNA if one really wants to.