He isn't faultless and he isn't playing his best ball right now. That's it. Every player has runs like this. Mahomes had had them (and guess what the Chiefs offense looks poorer when he does), Burrow seems to start every year like trash then magically wake up later, it's just really hard to be at the top of your game every single game in the NFL through multiple seasons.
I don't think the oline has been as good in pass pro this year as the last two, I think the receiver issues are pretty well understood and Josh isn't as confident in things around him as once he was and it's just affected him a bit. I don't think it is like the end of 2022 and start of 2023 when his previous relationship was exploding and it was pretty clear to anyone who listened to him and watched him that at times Josh's mind was cluttered. This just looks and feels to me like a normal little period of middling form. No panic. At some point we will get the elite version of Josh and he will click into top gear. I have no doubts.