I think you are in a very small minority. I've never encountered anyone balking at the name, even in educational settings.
Your interpretation -- which you didn't even specify! Many folks won't even know what you're talking about! -- is not the default in my experience. I usually think along the lines of "lame".
In other words, your perspective is the one that seems childish to me.
GIMP is known to be a term for something or someone that has less abilities. Whether you go with "it makes it sound like bad software," or the more recent and reasonable "it's an ableist slur;" outside of this circle, yes there is much balking.
And while I also do bristle a little bit at the general thing of "lets change the name because someones offended," I also understand that it's always a weighing test.
And here, given Adobe's traditionally damn near absolute chokehold on this space, I absolutely believe that, had they changed it a long time ago -- we could all be in a better place here.
Your interpretation -- which you didn't even specify! Many folks won't even know what you're talking about! -- is not the default in my experience. I usually think along the lines of "lame".
In other words, your perspective is the one that seems childish to me.