I mean. I wouldn't call Adrian Gonzalez "elite" at that stage. He had a decent run of being worth three wins but that's just...pretty good. By 2016, Gonzalez was a 1 win player. Gonzalez, as well, was acquired well before Andrew Friedman; he was acquired in the summer of 2012, and Andrew Friedman was hired as the VP of the Dodgers in October of 2014. Hanley Ramirez, as well, as acquired by the Dodgers in 2013 and his final season was 2014, so Friedman had nothing to do with Ramirez as Ramirez was a free agent that winter and the Dodgers did not resign him. Zack Greinke was on the Dodgers in 2015 under Andrew Friedman, but he was acquired in 2013. It was Andrew Friedman who did not retain Greinke after 2015, his first in LA. I don't think any of those players are good examples of the plan that Hoyer is following; I believe his blueprint is not "Dodgers every year" but specifically "Dodgers under Friedman".
I would also not say that's true, that Jed keeps his expensive "role players". Hoyer moved on from plenty of players at the deadline, including players with control (i.e. Kimbrel). As such, Happ has a NTC and has been the 7th best LF in baseball the last two years combined, Taillon is in year two of his contract (when exactly do you think he was going to be traded? Last year when he was hurt and mediocre? Who do you think wants the last 2.5 years of that deal desperately now?). Stroman was hurt last year at the deadline and the Cubs were two games over .500 - they were going to trade a hurt pitcher while they had a winning record?
I really am not trying to be a jerk here, but this feels pretty uninformed. You've highlighted three players on the Dodgers who were acquired before Andrew Friedman and complained about Hoyer not flipping players who were next to impossible to flip, either because of circumstance or contract. Hoyer has some faults, and trust me, if we need to, I'll go on my gripes with him; his ability to enact a Friedman-style-plan really hasn't gone as well as I'm sure any of us would have hoped (and I think his seat should be warm at this stage of the plan if the Cubs cannot come out of this tailspin right now). But I don't think much in your post here is the reason why.