The implication of "load" is not that it's a huge hurdle, but just that it takes longer (even a tiny bit) for most users to visually assess what it means. Add up all those little delays, and you have a frustrated new user.
I regularly use a piece of software from IBM that has (this won't surprise you) an awful UI. There are not one but TWO hamburger menus, hidden amongst a bunch of text menu headings, and figuring out where the one you want is can be noticeably taxing. Explaining to another user where to click is even worse - "No, not that one, the one under the... to the right..."
> but just that it takes longer (even a tiny bit) for most users to visually assess what it means
Also as an example, three horizontal lines also sometimes get used as grips to indicate an element can be click-dragged around. It is less common than it used to be, though.
I regularly use a piece of software from IBM that has (this won't surprise you) an awful UI. There are not one but TWO hamburger menus, hidden amongst a bunch of text menu headings, and figuring out where the one you want is can be noticeably taxing. Explaining to another user where to click is even worse - "No, not that one, the one under the... to the right..."