You're right!
It seems porsche is differtiating between markets for this freebies. With the CT Turbo the UK store shows RAS for free while the German and Belgium stores still lists it as an option ( ~2K).
Same for the performance battery plus with Taycan RWD / 4S, included in UK, but paid...
M26 Taycan / Taycan 4s has by default
- performance battery plus
- adaptive cruise control
- lane change assist
And GTS / Turbo gets:
- rear axel steering