Fair points.
I'm just thinking that, if its okay for the Windermere branch to have inaccessible trains on it all day long (with no services run by accessible trains) then why was it unacceptable for a handful of Scarborough services to be run by inaccessible trains?
I don't know the answer - I'm not saying that one situation is acceptable - I'm just wondering whether the provision of parallel buses was sufficient for Windermere?
In which case, why did a company who operate dozens of buses in York (i.e. FirstGroup) not provide that as an option? Unless the reality is that First were looking for excuses to abandon the whole project, that they seem to have been lukewarm at best about - in line with
@DarloRich 's suspicions. So the truth may be nothing to do with whether trains are accessible, just about whether they stump up for a parallel bus service.
There must be some rules somewhere, to explain why one situation was permitted and the other not?