In the stories (remember this is all fiction and there are two mutually exclusive stories), fiction told by Jews to Jews.
The story is being told in a Roman Protectorate called Palestine.
The Jews are a protected minority in Palestine and given special privileges.
To Jews pigs are unclean animals. You don't eat them, wear them, raise them.
To the rest of the population pigs are food and wealth and clothing and tools and decorative objects.
Both populations believe in demonic possession.
One population is jealous of the other populations special status and considers them weird at best.
Someone who can control demons for any reason is a person to fear.
Now:
would one population see casting demons out of humans and into a useless, worthless object that is then killed and destroyed ending the threat from demons as good while one population see it as destruction of property AND someone with control of demons that might just cast them into the people?
Phat writes:
Why would Jesus destroy the livelihood of a region or family?
As a story told to Jews by Jews and about Jews see it as describing destruction of a livelihood?
If the answer to that is "No, they would not see it as describing destruction of a livelihood then the topic must be something else.
Throw "describing destruction of a livelihood" away and go back to the story.