Playing from a home list plays the content of that home list, hence also the configurable size.
What you want is a smart playlists. Add it to favorites and directly play that playlist.
Allows you to play anything you want in the way you want with 1 click.
And no clicking the header does not lead to a list of 1000 songs, it’s just a load on demand without knowing the size in advance, scroll down in the list and it will load more up to your full library.