You have a cartoon version of philosophy in your mind that is in sore need of remediation. These are precisely the kinds of questions that philosophers have been utterly preoccupied with for centuries. As if Bradley, Dewey, William James, never existed! As if the very idea of a pragmatic, "reality-based" science had not been proposed and debated rigorously for decade upon decade.
As if the subject-object problem wasn't at the core of the foundations of modern science!! Far from being some late, decadent conceit of a handful of disconnected postmoderns, the problem of objective knowledge is at the very core of modern science, at its very foundations, on to the present day.
Have you read a single volume of philosophy in the last decade? Are you not aware that the Grand Poo-Bah of modern philosophy of Science, Popper himself, redefines "Objective Knowledge" to deal with that very problem?
If you are content with a naive, self-contained scientism that remains dogmatically immune to philosophical critique, that's fine. You're certainly not alone. But let's dispense with the sweeping generalizations that have no bearing whatsoever on the reality of the history of philosophy, science or ideas in general.