You gotta have more empathy for the average person.
If the average person cared about binary size in terms of bloat, then being that smartphone apps are almost all statically linked, why are smartphones the most popular computer in the world?
To them bloat would feel more like apps you can’t delete, or say ads in a key gui component.
The bloat most people will care about in terms of Linux is facing down a software update prompt with 1000 packages and feeling anxiety over the last such dialog box destroying the use of their favorite apps.
I’m glad there are hundreds of successful distros, their complexities will serve well the hundreds of Linux desktop users.
I think Darwin is still open source, and WebKit is still open source.