OK I did some research why Lexus chose V8 and looks like they're saying Lexus chose the "feeling" or "pure" part of V8 sound and characteristics.
Everyone is downsizing to small displacement turbo, but Lexus kept the V8.
I am still not impressed with the 0-60mph time though.
Lexus RC F Chief Engineer Explains Why He Chose a V8
https://www.carthrottle.com/post/why...-buying-an-m4/
The Lexus RC-F Is a V8 Beast in a Turbo World