Eh I guess when I say people I mean in a more general audience way. Yeah there was much bemoaning and crying about N52 Superman who dared wander outside of the sacred grounds of John Byrne but at the end of the day it was mostly the same inter-Superman kvetching that's been going about everyone's personal idea of what Superman is suppose to be except this time it was the Post-Crisis fans complaining about things changing. But Byrne's take doesn't exactly light the world on fire anymore, he's just the current and pretty bland standard these days for a character who's often left trying to figure out how to be relevant.
I'd argue the main version of Cap these days is the movie version but beyond that it did capture a wider attention than what N52 Supes did like manwhohaseverything pointed out even Chris Evans picked up on it and had a wtf moment. It was kind of surreal when you know comics have these swerve twist that either get undone or are revealed to be a hoax all the time but this particular event struck a cord with people probably because Cap at that point had risen to mean something to people via the movies in a way Superman just don't anymore and probably hasn't in decades. I personally found the reaction to Hydracap stupid but it is what it is.