There are effectively two options if you dismiss Linux a priori.

Which yes, many people do. There are plenty of people who have no desire to try Linux. And if you're a developer then you have to consider those people, because many of the people who use your software are the type with no desire to try Linux.

But there are fewer and fewer reasons not to try Linux, and that group of "I'd never use Linux", while still large, is slowly shrinking. I'd argue that Microsoft is doing more than Apple is to push people into reconsidering Linux (and, often, discovering that it's actually pretty good these days, and that your techie friend whom you call all the time to help you with Windows is actually happy to help you with your Linux questions instead).

But slowly, over time, it's making less and less sense to dismiss Linux a priori.