Is this something you know from experience or are you armchair guessing?
If I recall correctly, the work Andreas did at Apple was mostly focused on performance, and Safari has long had a reputation for excellent performance. Maybe you’ve also done that type of work, but otherwise I’ll trust his judgement.
My experience with big projects would confirm this. Getting the basic things implemented is quite fast, but the devil is in the details and they can drag on for years, if you didn't account for all of them in the beginning.
And there are a hell lot of details with the plattform called the web.
But I would think in this case here, they have no intention of going to 100% by all means, to support all the broken pieces of web garbage out there.
The goal is to implement the W3C specs. (they are even working on fixing the specs)
Oh and Kling specifically worked on browsers before, so that is a good base.
"I've had the opportunity to work on production browsers for many years (at Apple and Nokia)"
I made a comment about why browser is hard in general. I don't in anyway suggest or imply this team would struggle with performance, so not sure why their (amazing) background would be relevant.
Please re-read your own comment. You describe two hard things, performance and long-tail compatibility, and literally state that “the team” will have a nightmare left after an initial cruise.
Having a better team just means they can manage "the hard part/nightmare" better, doesn't change where the hard part is.
And I mention these two things because the article itself said they're going to "[f]ocus on vertical slices" first and "[d]eferring on performance work". So I was pointing out that it basically means they started with easy part (nothing wrong with it).
I still failed to see what point I said you didn't agree with, other than argumentum ad verecundiam.
If I recall correctly, the work Andreas did at Apple was mostly focused on performance, and Safari has long had a reputation for excellent performance. Maybe you’ve also done that type of work, but otherwise I’ll trust his judgement.