[chasil]

I am aware that the launcher can be changed.

I am aware that the keyboard can be changed.

The question is why I have to change them, when the Lineage versions are open source?

[ementally]

Your question doesn't make sense, GrapheneOS said that they prefer spending their time implementing and fixing security issues rather than things that can be easily changed from open source offerings. See https://news.ycombinator.com/item?id=47247778.

[chasil]

So let's rephrase this:

"We want to be ugly because we are too busy!"

Said no one ever.

[aboardRat4]

I also don't understand this question. The default launcher is like twm on Linux. It's only goal is to give you some initial GUI so that you could install something you actually like.