About the time period stuff, new canon has been around only 8 years, so it’s like we’re back at the 80s content wise.
No it's not. They weren't churning out book after book during the 80s. The EU really only kicked into gear in the 90s and TotJ started being published in '93. Furthermore, the film eras have already been heavily explored by the EU so these nu-EU stories just feel repetitive. Especially since they tend to repeat plot points and characters from the EU except typically done even worse.
I'll give them credit for the High Republic, but the lack of any compelling villains makes the entire era pretty bland.