I do enjoy the thread - it is hard not to think Doj wants the Red Sox to go through a Houston Astros rebuild and play Sean Coyle a lot while still charging fans the highest prices in baseball. But I digress. Some specific issues.
1. Pedroia was one of the Top 20 position players in baseball as recently as 2013. He was still a 4-win player last season. He has had some nagging injuries which have prevented him from being the MVP-level guy he was in 2008-2011. Even last year, with his physical issues he was the 8th best 2nd baseman in the majors. He has dropped off from being one of the league's top regulars - to merely being a very good one. This year, before the hamstring thing, his bat clearly looked to be back.
2. One surmises that the hamstring would have been miraculous cured if the Red Sox were in a more favorable position in the standings.
3. I defended Brock Holt's inclusion in the All-Star game - he was not the best choice for the Red Sox representative, but he was not a bad one. But Pedroia, five years older than Holt - is a better player right now, in virtually any level of health.
4. If you were to move Pedroia, you would not get equal value back. If your thread said trading Pedroia could be our Herschel Walker deal or whatever ... that would be coherent (I'd disagree, but it would be coherent). Trading Pedroia for the sake of it, or being afraid he won't last - does not make sense. Given the way the contract is structured, it is actually quite unlikely that Pedroia will become an albatross. But that is miles away from saying he could bring back a great prospect haul commesurate to what he means to the Sox. Plus, I like him.
5. If Pedroia got dealt, it wouldn't be to promote Holt. It would be to perhaps make room for Moncada, or to turn Betts into a Ben Zobrist Swiss-army knife.
So, in summary - you would not get equal value for Pedroia. Pedroia is still really damn good (even when he has been hampered physically) and if you did deal him, it wouldn't be to free up space for Brock Holt. Aside from that, I agree with you.