We are currently updating the pages to include all regionally different guidelines. If you find inconsistencies, please refer to the English page. Thank you!
The Detour Prevention Mechanism (DPM) should prevent Waze from advising routes off a highway/freeway only to be routed right back on the same highway/freeway. For an explanation how this works, see the global Wiki page Detour Prevention Mechanisms.
This sort of problems are discussed in the Slack channel # 22-bl_routing