At the moment, I (sadly) lean toward the view that slower Earths have a better chance at FAI. (Much of my brain doesn’t know this, though: I remember reading the Summers news with glee, and then remembering that on my current model this was actually bad news for FAI.)

Feeling the vertigo, huh? I went through a stage around the 2012 election where I thought growth was bad for somewhat similar reasons. It strongly affected how I voted. But with another year's consideration I admit to simply having no clue whether GDP growth overall is good for the far future. So I'd now say growth is good but that its importance shrinks with how much you care about the far future over the present.

That's uncertain, but I probably won't think much more about it given the likelihood of better future-affecting interventions than influencing growth.