A full 3rd or more of the time when i try to tap on the "new" link at the top of HN, i accidentally tap the "jobs" link with my average-sized fingers because my phone wraps HN such that "jobs" is directly below "new", with like 3 pixels of gap between them.
Similarly, the links across each post in the list, along with the near-microscopic "up" arrow, require teeny tiny baby fingers to tap reliably.
Certainly no tiny babies are using HN, so... please, HN, fontSize+=2 for the links! :-D
To me, the most annoying part of using HN w/o other clients on mobile is not this, which can be addressed with extra care or zoom in. It's the idiotic decision to somehow think the post text is less important than comments and so the font color must be set to be lower. It's so low that it's unreadable in mobile. For long posts like many show-HNs, I have to just skip reading it until I get back to desktop, which isn't only not ideal, but also defeats the purpose of show-HNs since the ones that doesn't stay at top are the ones needed all the attention and HN is not helping by making it unreadable.
Ya, a simple css color change to match comments' color need to be part of the fixes to be addressed when there's a blue moon.