No, they don't need to do anything. This is open source software, provided at no cost to the user. The user is not owed a damn thing.
Now a maintainer may choose to provide a build or easy-to-use installer, because making things easier for users (which will presumably increase their user base). They might do that because that has value to them, they find it fun an interesting, they want to feel pride that they have a lot of users... etc.
But they don't "need" to do anything.
Not sure why that triggers people.