If you read universally accepted classical philosophers most of their work are not precise at all, yet they are widely recognized.

Actually, a lot of philosophy is "arguable". I don't think you can argue a lot with a mathematical proof.

And I'm sorry, but when Lacan compare the penis to square root of -1, it's hard to come back to scientists and sell the rigor of philosophy. Same when philosophers use and abuse Gödel's incompleteness theorems or the quantum observer effect to justify ludicrous claims.