I think it just depends on how well it's executed. In the case of TLOU, I think they could have done a wee bit more to make it clear why they're showing you what they're showing you. I think there is a very good reason for it, but that's not necessarily obvious to most viewers yet so I understand some of the frustration. (But I think people will look back differently on it when they see the big picture. I've mentioned it elsewhere, but imho audiences are far less willing to trust a show to pay off on something like that than they used to be)

Station Eleven did a lot of flashbacking back and forth, but it alternated every episode - one ep would be set largely in year zero, and the next in year twenty - and the eps were released in clusters of 3 or 2 so you got a dash of both every week. I also think it was quite a bit more deft at making both timelines feel "present", with tricks like phantom audio from one timeline bleeding into another, or Kirsten's sometimes rapidly intercut memories vs current experience.

I find the other "dramatic flashback" format way more fucking annoying, where they show you something crazy in the first scene and then flashback to showing you all the steps it took to get there.