NO. You are making a mistake pretending they don't blind a soul, unless they are dimmer than the factory lights since the beam pattern is worse so the only way they couldn't be more blinding is if the result is worse vision for you too.I was comparing non-DOT approved LED retrofits to what comes stock on many modern cars that certainly then is DOT-approved and asking the question - what is the difference? I get blinded by these legal/OE/DOT-approved lights all the time but that's ok? But my LED retrofits that don't blind a soul are illegal. Just a discussion topic and asking a good question.
It is not a matter of someone else defending the difference. What is the difference of me working to earn a living and robbing a bank? I earned the bank robber proceeds right? No. The difference is very clear. It's not at all a good question in this day and age where it is all over the internet that led retrofits do not cast the right beam pattern in incan housings.
The difference is that engineers make the factory headlight housings to take into account the beam pattern and brightness that escapes into the other lane as well as the height in the same lane.
If you can't see using stock light type, you should not drive at night or the problem is the housing has degraded from lens hazing. This is common and a reason to fix the housing instead of selecting a retrofit bulb that casts a wider, and usually bluer beam trying to compensate.