I symlinked the game folders from a NTFS drive to steamapps/common/ on my ext4 drive, and it works fine. Of course the compatdata and shader caches are on the ext4 drive.
On iOS, Apple only allows browsers to use Safari's WebKit. So they all use the same rendering engine, effectively making all iOS browsers Safari clones.
Apple "privacy first" policy is just the corporate image they want to sell, if they can get away with it without being questioned by the public, they will.
And those 2/3s shine through, the last big engine update for HL2 was in 2007. It still looks great.