I would see S2 and S3 as supporting evidence for S1, and hence an argument.S1: A university education is not as needed as it used to be.
S2: More and more jobs require specific trade skills that cannot be learned at a university.
S3: In addition, an increasing amount of work requiring higher education is being outsourced to countries where labor is cheaper.
Would this be an argument?
To me it seems like a set of assertions. Or facts but no links between them/