Johnson not only managed to squash it down, but instead of ignoring the stupid parts of the hooks, he ignored parts of the original trilogy instead, with rather predictable results.
Where did he ignore anything from the original trilogy? Just because you assert he did, doesn't make it true.
However, the First Order was essential for the Eight Installment. So is it a remnant of the Empire or not? How on Earth does it have such a vast fleet that rivals the Empire? How was Snoke able to convince anyone to join his cause, and more so, what does Snoke even represent? If he isn't a Sith, what does he want to do with the galaxy? Where do the First Order's resources come from? What is the balance of power between the Republic and the First Order?
Bull****. Those were vital questions for seventh
instalment, the instalment that introduced them and claimed they had vast fleets, planetkiller weapons, etc. If you don't lay the blame for ignoring that on the episode that introduced them out of thin air then it is massively unfair to blame the next film for not doing so. Especially as the Republic is basically gone at this point.
Like I said before, you want to blame Rian for JJ Abrams mistakes.