Post-modern philosophy or neo-sophistry?

The contradictory nature of dogmatic scepticism (asserting that nothing can be asserted) has already been pointed out across the centuries. If one is simply unsure about everything but not convinced about the uncertainty, inquiry has still far less value then when one is on a quest to find absolute truth. Is sceptical philosophy possible? If no knowledge can be acquired, not inquiry can be successful or unsuccessful, isn’t philosophy pointless? Does it even exist? Pyrrhonism simply keeps al inquiries unresolved. Judgement is suspended. Truth is sought but never obtained with certainty. As such it may be viewed as fruitless philosophy. But dogmatic scepticism actively rejects all inquiry as pointless, rejects truth, and such arguably even wisdom.