Many others will tell you that pigs are dirty animals. They eat garbage, feces and even (if given the chance) each other. On the whole, this is true.
Speaking of modern pig industry, the problem is that if the pig industry is implemented on a large scale without proper environmental supervision, it may have adverse effects on the environment, such as polluted runoff entering the water supply system. Intensive pig breeding has become an incubator for many human diseases. But this is not unique to pork production.
Some people will also tell you that raising pigs is cruel. There is no denying it. It includes raising and slaughtering animals for our consumption. But this is not unique to pork. As cruel as other meat products. Someone will tell you what you eat. If you eat a pig, you will become like a pig. Hmm? Let us who become chickens, sheep and cows reflect on this. Maybe fish can join in. And ears of corn. Don't make me start using those pumpkins!
So ... what happened to the pork? Except for all the above combinations? Most importantly, the fact that it is banned in Judaism and Islam spreads people's belief that pork is problematic. This idea has been rooted in our collective consciousness.
There may be a reasonable time and place not to eat pigs. Maybe it was the Levant thousands of years ago. It may be due to the above reasons. However, this did not stop other tribes or cultures from eating pigs at the same time and place.
If your cultural tradition forbids you to eat pork, never eat pork. But don't try to raise it beyond the traditional level.
If your personal morality forbids eating meat, never eat meat. Moreover, I will try not to raise the status of eating meat to a position outside the tradition.
In terms of structure and composition, pork is really a kind of red meat. Pork is certainly not as thin as chicken or duck, nor is it healthy. I think what they mean is that you can do anything you usually do with chicken and pork. Maybe it's right to some extent.