There is no consensus answer to your question and the truth probably lies somewhere in between, i.e. a mix of nature and nurture affect jaw misdevelopment with varying degrees of each at the individual level but probably a trend whatever the case may be.
In terms of long-term general population, I think working toward a clearer picture is important so we as people can move toward prevention of jaw issues if/when applicable.
At the individual level or for you, I think the answer shouldn't affect your decision in any way. If you can benefit from jaw surgery, you can benefit from jaw surgery.