That is interesting actually, but compared to other companies I'd not say that's significant. Specially because I suspect they switched to WebKit because they had no other choice 🤷♂️
If you do anything as merely speak the name of anything FOSS in Apple headquarters, they throw you in a deep dark well in the middle of the campus and remove your name from the world of the living.
"why is that we eat the fruit and not the tree?"