True, minute amounts though. Sometimes its easier to start with the areas we feel comfortable with and work out from that. I would say, probably not healthy, I don't wear it for that reason, BUT, it was never part of my routine.
Since it is yours, I would say work in a different area for "healthier" and continue. Maybe someday you won't want to use it. But if you do, then that is your right.
I believe what the concern is; nails are dead. Keratin. However underneath is thin and open skin. Now, even though our nails are "dead" per se, they do have pores. So the chemical of the polish can go through the nail reaching that exposed under area of skin. Hence how the chemicals get into your body.
Looking at it from your angle you probably maintain your nails and keep a base on. Then the rest is probably not going to be a problem since it won't seep through the base. If you let it dry. I believe you know what I mean! You can always ask around for a "safer" base. Yet you will still be able to do your nails. I like pretty nails, but haven't really ever put effort into mine.
Anyhow I believe that is where this "red health warning flag" is coming from.