Yes, bad UI design exists. On the other hand, good UI design is largely a matter of what people are familiar with. This is true of both open source and commer

Yes, bad UI design exists. On the other hand, good UI design is largely a matter of what people are familiar with. This is true of both open source and commercial software. If we see bad UI design in open source software more, it is likely a product of open source software being more accessible. (People are more likely to try something they can download for free than something they have to pay $1000, $100, or even $10 for.)