In my experience Apple still has the most haggle-free support experience and offers full replacements often and quite willingly, but whether you land on a no-questions-asked-replacement issue is luck-based.

A few years ago I had an iPhone whose mute switch would flip off on its own after 1.5 years of use. Went to an Apple Store in U.S. Northeast, described the issue in a sentence, handed it over, and five seconds later the bro told me I was getting a full replacement, which was in my hands three minutes later.

Then, in early 2019, my iPad Pro was having this occasional touch-not-registering issue, which to this day I’m not sure if it’s software or hardware. It also had a tiny tiny strip of dead pixels tucked in a corner, which was only noticeable when using a video player. I brought it into the Apple Store, this time somewhere in Asia, mainly for the touch issue, but casually mentioned the dead pixels since I was already there. Ended up getting a full replacement, and the lady told me it was lucky that this minor display issue was present, otherwise it would be hard to fix and basically impossible to get a replacement for that hard to reproduce and hard to diagnose touch issue.