I'm in favour of this new taxation structure, but there is a narrow group of people with modest means like my parents who will be disadvantaged by this new tax structure.

They live in the middle of buttfuck-nowhere with a large plot of cheap rural land. Principal residence only covers up to a half hectare of land, given you don't meet certain niche exceptions. The actual house they live in is of little value; 100+ years old and probably to be demolished upon sale. The majority of the property value is in the surrounding land. Not a fortune or anything, but definitely more than $250k, which they'll now need to pay at 2/3 capital gains (they bought it for next to nothing decades ago). Not gonna throw them into financial ruin or anything, but it will somewhat affect what they can afford to move into when they go to sell their place.

Again, I'm in favour of this tax structure, but just wanted to include this anecdote given the idea that this only affects billionaires.