The law in my state doesn't require car seats be in the back if it's full or not possible. IIRC they also aren't required if there's no more room. I put my kid up front in my truck that had zero back seats, only a couple people said anything and I told them to pound sand, it certainly wasn't illegal.
It was never about the limit of the law. It was always about what will get you scolded or otherwise harassed by other parents or people in the "children" profession. Any sort of place lots of kids are (daycare, doctor, etc, etc) are absolute hives of those kinds of people.
> I put my kid up front in my truck that had zero back seats, only a couple people said anything and I told them to pound sand, it certainly wasn't illegal.
Yeah because at that point you're basically advertising that you don't give a shit what they think and so you're a lost cause to the kind of people who'd try and guilt you.
I bet if you showed up wearing both a front and rear kid carrier while riding a motorcycle they would have not said a word and avoided I contact with you entirely.
Legal or not, there are real safety reasons not to put a small child up front. I bet your car's user manual says not to put kids up front. The safety systems are designed with minimum height & weight assumptions. The front seat belts aren't designed for a car seat. But most importantly, airbags explode with serious force that can break bones in a kids face. If they're in a rear facing car seat it can strike the seat (which will be close to the dashboard) with enough force to snap their spine.