Having a little perspective helps. People dying because they lack health insurance pisses me off. A guy, and especially one who seems to be knowledgeable about stringed instruments, who calls what may or may not be an ukulele a "little guitar" amuses me.
After college, years and years ago, I worked at a place that served a pizza-like food on rounded loaves of bread. The owner called this food a "torta" and the cooking idea behind them was that the tomato sauce on the bread steamed the vegetables in the tomato sauce and the cheese that covered the concoction kept the food from drying out. Unlike pizzas, which are usually cooked at extremely high heat in pizza ovens, these were cooked in pans in convection ovens. The owner hated when people referred to them as pizzas and instructed us to politely correct customers by telling them that while the food we served was similar in some ways to pizza, our food was called "torta" and it was a different type of food. Once in a while a potential customer would say something like "Oh, I thought you served pizza here" and leave. Employees would get a talking-to if they called the food pizzas. Then the restaurant won an award from a local weekly newspaper for "Best Deep Dish Pizza." After that, nobody told any customer who wanted one of our pizzas that what we served was "torta," not "pizza." So I suppose that if calling an ukulele a little guitar draws people to the instrument who might be put off by hearing the word ukulele, then so much the better.