I haven't experienced that the teachings need to change personally, but yes the emphasis needs to. Unfortunately westerners are being fed teachings that are more like "this meditation will make you experience a sober LSD trip" and "this one will cure your depression" and "this will give you insight into the nature of reality", because that's what westerners want. But what they actually need is teachings on compassion, loving kindness, etc, which they are in no way interested in. Ultimately you cannot have one without the other. There are no eastern spiritual paths that don't integrate both insight and compassion.