I'd agree with you if I'd setup my solar panels. But if I'd ever install solar at home I'd hire a company to do all the setup. I believe that it would fulfill industry standards.

It wouldn’t. Just like hiring the best pros to make an extremely fancy kitchen wouldn’t make it equivalent to a restaurant kitchen.

It does if your local regulations specifically provide for small scale generation.

Local regulation on that topic usually revolves around easing the requirements for small scale/residential production, not around making them respect the same standards as large electricity producers.