Cold start rattle

Hiya fellow fit owners, I finally joined the club with my 2015 automatic w 40k miles & overall very happy!! I wanted to ask if anyone else has a kinda rattle or roar on cold start right when you start up the car. Looking things up I saw it could very well be the VTC actuator. My real question is whether or not it's a problem? I know most hondas do it at one point or another but should I worry about getting it repaired? My mechanic said he'd look at it if I wanted but he wouldn't be too concerned and I did just get a PPI and they said all was well though idk if they'd look at that. I still have the Carvana warranty so figured I'd ask!!