Just to clarify on this, the old “Steam family share” was limited to 5 accounts. “Steam families” allows 6 accounts, which is an increase. It also doesn’t require the inconvenient logging into multiple accounts on everyone’s individual device, which was annoying.

The big thing I view as a downgrade is that it doesn’t allow sharing outside of your household. My brother and I have used family share for years even though we don’t live together anymore. However, he could not join my “Family” today because steam identifies him as being in a different household. Thankfully, family share still works for now.