Err, I mean completely regardless of whether I think 8GB is enough or not, they didn't admit anything of the sort:
There's a memory requirement for Predictive Code Completion in Xcode 16, and it's the closest thing we'll get from Apple to an admission that 8GB of memory isn't really enough for a new Mac in 2024.
(Emphasis mine.)
Not being able to run "AI" predictive code completion with 8GB doesn't mean they're "admitting" jack shit.