I think it's been the same, just recently I need a way to set custom headers for specific paths. Documentation [1] says that I can use * or :placeholder(s?), but there's no examples other than "/*" (which matches everything).
I thought it can do matches like "/folder/*/*.html" but... actually can't. I try look around in the forums, seeing others got confused as well and in the end I gave up :D
As for redirects, I really like :splat [2], but for my use case, I need something can be matched in the middle of the URL string, e.g.: /blog/:splat/whatever. Maybe this is like a weird use-case, or rather I'm thinking of it like glob patterns or regex.
[1] https://docs.netlify.com/routing/headers/
[2] https://docs.netlify.com/routing/redirects/redirect-options/...