Disable variable picker button

Please consider adding an option to disable the variable picker without necessitating the complete disabling of the variable manager. I enjoy using the variable manager to create new variables, but I don’t want the variable picker to obstruct my workflow. I believe I’m not fond of its user interface. Although I can hide it with CSS, like so:

.variable-picker-button{
	display: none;
}

I think a native setting would be a great addition.