You probably noticed the poll I did regarding gun stance. The truth is that people mainly want “reasonable” restrictions and that’s both conservatives and liberals. Your hoplophobe argument is like the “it’s cause they look scary” argument, it’s strawman.
No, it really is a problem that hoplophobes dislike "scary looking" weapons.
This is supported by their fixation upon the AR-15, while entirely overlooking
guns which function similarly, but look less military, eg, Ruger Mini 14, M1A.
But even so, it's not a "straw man" because it's not an argument. It's just
an explanation for the hoplophobe's mistaken focus. And it's an admonission
to look at an entire class of weapons based upon function, not brand & model.
I've advocated a lot of reasonable additional gun regulations. But they go
largely unnoticed by liberals, who want something more confiscatory, thus
avoiding all middle ground.