If you're trying to claim that only scientific ideas are worth entertaining, then the problem is that that claim itself is not scientific.
The commenter you're responding to does not even understand the problem if he thinks science can solve it, as others have pointed out.
Or, for that matter, look at Hillary Putnam. Notice that he was a rather accomplished mathematician: https://en.wikipedia.org/wiki/Hillary_Putnam#Mathematics_and.... I believe he also had an extensive knowledge of physics, though I don't think he had any discoveries in the field.
(Edited to be a little nicer).
Far from being excluded, philosophers have defined a large chunk of what modern science is.
If you mean that he's responsible for our understanding of science, that's debatable. Outside of philosophy, Popper is extraordinarily well known, and you can't avoid people speaking as if falsification is all there is to philosophy of science. Within philosophy, he is respected, but I don't think his particular views are particularly popular.