I've only used it once and thought the Frodsham to Liverpool flow was quite decent.I think there are certainly other instances where this accusation could be levelled against TfW, but I don't think it applies here. Merseyrail are now back to their pre-Covid 4tph between Chester and Liverpool, so whilst the TfW service is certainly quicker, its low frequency means it is only the fastest option if you are at the station immediately before the departure time. And so reducing it to 1tp2h doesn't have a massive effect on journeys between Chester and Liverpool.
Admittedly it is more of a problem for people making intermediate journeys, but in my experience of the service even pre-Covid, those could usually be counted on one hand.
I think it is more important for them to focus their resources on flows which would otherwise go unserved, e.g. Chester-Shrewsbury/Crewe.
