Drywall bulge

Hi,
I had the inspection done for a 19-year-old house that I am interested in purchasing.

One issue that was causing concern for me was a bulge in the drywall on a pillar that would be responsible for bearing weight. I have attached photos of the bulge and associated crack below.
We got word just now from the seller that the bulge was there shortly after the house was purchased and it was probably caused by settling.
I wanted to check if it is an issue that could deteriorate or not something I should be that much worried about?
Thanks.
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Please refer to remarks at your other post on this subject.