To be fair, I recently found out that Jupiter HAS no surface, at all. So there is that. 😁
I always thought that “gas giant” meant it had a really deep atmosphere with a relatively small planet at the core. I think that is what I was taught in public schools (graduated in 1972). But based on what I’m seeing now on the internet, it’s “gas of a sort” all the way down. Of course, the pressure as you get into it probably gives something more like liquid, but still...