Read the discussion. They plan to remove those libraries, too. Their current automated build system apparently requires they build i686 for every x86-64 package

Read the discussion. They plan to remove those libraries, too. Their current automated build system apparently requires they build i686 for every x86-64 package. They don't want to spend the effort to adjust the build system to just build a selection of i686 packages. They plan to drop the whole architecture. It seems like these developers have tunnel vision. It's like when pulseaudio came about and the whole focus was streaming Bluetooth audio. It took over the system audio and broke everything else (games, coincidentally). They know this will break some things they don't personally use, and they don't care.