I think we’ll only know for sure that fate of the ST once IX drops. The whole ST hinges on the payoff of IX; if it doesn’t work, then I can’t be on board and believe many others will despise it for it. It’s super risky how the writers are going about the ST. So far we’re two films into it and they both leave off on HUGE cliffhangers, so all it ends up doing is generating HUGE amounts of hype. Star Wars '77 at least felt like a complete movie, which worked to ESB’s benefit.
What we have now is essentially Star Wars: For a New Generation split up into two parts. Every freaking story thread and character arc falls onto IX.