IngressRoute weight referencing K8s Service instead of TraefikService

Hi!

I was trying to use the weighted round robin feature in K8s, and when looking at the CRD, it says:

Weight defines the weight and should only be specified when Name references a TraefikService object (and to be precise, one that embeds a Weighted Round Robin).

When trying it, I have referenced to regular Kubernetes Services and it does work. Is this wrongly documented, or am I missing something?