they do not require a degree, so everybody with the minimum qualifications gets looked at, including those without a degree. Then it comes down to flying experience and testing performance.
Sure everyone gets a "look" but for QF they also look to the future as not everyone wants to fly until they are 55 years old.
Most carriers look at the bigger picture.
"Okay he is a good pilot, but what else can he/she offer us?"
If someone has a major in management then this person is multi-tasked. He/she can do more then just fly. Or maybe they are a good teacher and will become a check and training instructor later in their career.
A degree will just give you options, simple as that!
The more multi-tasked, the more attractive you are to a potential employer.