It is. But that is the market. There are only 4 or 5 QBs that deserve top money but the market doesn't work that way and no one team can change it themselves.
The Chargers could certainly help him more by giving him at least one credible outside receiver. The Texans played defense tonight in a way that "you can't beat us outside, McConkey can have his catches in the middle of the field and we will rally and tackle, that doesn't beat us." Of course they missed once with a bad angle and McConkey made them pay but otherwise the plan worked to the letter. I said it about the Bills pre Cooper, I say it about the Chargers now... you can't win in this league on offense if you can't threaten dow the football field on the outside.