Earlier quoted context omitted.
The good form is protective, the bad form just normalizes something that is common at the time. Is there any particular reason a woman cannot lead a prayer? Is there any particular reason why we exchange work for money? Is there any particular reason why not to eat pigs? For each of those, the answer may be yes or no depending on your time and place. The reason yes or the reason no may also be different.
Except many of those do have reasons, those reasons are just outdated or immoral or context dependent. The statement doesn't mean to keep the status quo, its meant to encourage tracking down the "why" before tossing things away. If a society says to not eat pigs you can't just decide to one day toss out the law. For all you know the pigs of that region are infected and will make you sick. Throwing away that status qu…
Even if the pigs themselves were fine, perhaps there are other benefits that come from not eating pork.
I'm not an expert by any means, but I could definitely see how eating Kosher could have helped prop up Jewish businesses in the areas where they were a minority.