In 2018, we had a large number of players knackered from the Lions. It was a different kettle of fish. If anything, this team hasn't played enough rugby rather than played too much. On top of that we had some key players in 2018 who didn't go with the Lions who were fading with age, the likes of Hartley, Robshaw, Haskell and Brown. Is that the case with Youngs, Faz, Binny etc now? Possibly, but the rest of the team isn't shattered like it was in 2018, so I'd be hugely surprised if we suddenly go on a big losing streak.
The England team of 2017-18 had been winning while playing badly. Last year, England did not play badly. Their attack did, sure, but their pack and defence were as dominant as I have ever seen an England pack and defence. Their set piece was excellent, scrums, lineouts and mauls a constant source of points and the turning over of opposition ball. The kicking game was not outstanding, but it was effective. None of that could be said for 2017-18 England. And scraping wins? In their 8 wins last year, England won by 7 points or less 3 times. One of those was in appalling conditions in Scotland and another was the game against Wales where they led by 17 points with 5 minutes to go but went down to 13 men and let in some meaningless tries. They were often dominant last year, just ask the Irish.
I'm sorry, I just can't see the 2018 comparisson holding water. But even if I'm wrong and it all comes crashing down, well that's a good thing isn't it? 2018 resulted in changes to a lot of the team, a run to the WC final and 2 more trophies in 2020.
Btw, 6&7 had long been a problem for England not because of Eddie's stubborness but because of a lack of quality options. I'm pretty sure Curryhill were thrust into the lineup as soon as they were out of short trousers and Robshaw and Haskell were duly dumped, but maybe I'm misremembering.