Just in case there's misunderstanding about what "seize" means...
Are governments actually taking ownership possession (nationalizing) of Russian yachts or are they removing the assets from the owner's control?
In other words, does "seize" mean:
(1) civil forfeiture like USA police confiscating cash without due process ?
or
(2) freezing an asset like impounding/towing a car away and the owner can eventually get the car back later (e.g. after Russia stops the war) ?
The various reports I've read makes it seem like UK is treating Russian yachts as (2).
In contrast... with the fleets of airplanes leased from Europe sitting in Russian territory, it looks like Russia does literally want to take ownership of them in retaliation to sanctions.