Remember that Riker and Troi in Ten Forward agreed with Picard's assessment. And in case someone argues that they were not real, the real Riker at the end of the episode, having heard Picard's detailed story, agreed that it was hell and did not contest it.
They agreed in Picard's assessment of Picard. They were not blanketly implying that there was some bias against the sciences in Starfleet.
Again, I'm firmly in the camp that Starfleet is a de-facto military. You're just twisting one episode completely out of context. As someone else suggested, how about you pull from some other sources, Starfleet sources (not David Marcus) to prove some Starfleet bias against the sciences.
It bears pointing out that there were a fair number of people both for and against Starfleet is a military in the other topic. In contrast, you seem to be the lone person on this particular hill. Something to think about.