Wouldn’t bother me in the slightest. He’s not even three, and at that age kids will mimic lots of things.
He sees his mom and sister with painted toes, and wants his painted as well. He also sleeps with a doll.
The boy is also obsessed with trucks, and climbs very tall things and plays very roughly.
Perfectly normal, and nothing for anyone, including a raving right-winger like myself, to get worked up about.