(pokes head above the parapet and waves a white flag 🏳️) I come in peace. But I'll preface my point by saying I am a tube worker.
I think that training and staffing are both insufficient. I get a briefing from a manager on new arrangements whilst at work, whilst trying to concentrate on running my station, alone. Not much goes in, tbh. Practical and frequent training on things like, ramps, and guiding, and planning journeys, is sparse. Not an excuse, but a reality.
Did you know that if a (TfL) lift is out if service I am obliged to call the customer a taxi to the next accessible station? I don't know about NR policy, though.
Anyway, much of the Tube is inaccessible so we have to try and mitigate for that by planning journeys involving other modes (bus, DLR etc) for customers, having raised parts of the platform (still not good enough for small front wheels, tbh) and providing leaflets and badges and everything else to attempt to make the Tube for everyone.
However, things go wrong, a lot. Breakdown of communication, lack of staff, service disruptions, equipment being faulty tbe list goes on. Again, no excuse, just saying how it is. It shouldn't happen, but it does.
If you follow other disabled people on Twittex your eyes are really opened to the problems.
I used to work at a Major Tube Station Under a National Rail Terminus in North London and I would take a customer up to the correct NR gateline, find four or five staff standing around chatting about nothing of consequence, and when I asked them to assist my customer, the first thing they always said was, "Have they booked it?" I used to get angry and say, ALL YOU HAVE TO DO IS HELP THIS CUSTOMER ON TO THE TRAIN and they would huff and puff and make the person feel small and like a burden. AND they would have a go at me for merely for being a decent, helpful human being and would berate the customer for not planning in advance.
If we are to treat Everyone The Same then we must assume everyone has emergency dashes to somewhere via public transport, so othering disabled people because they have the AUDACITY to need to get somewhere asap and urgently is Just Not On. Why can't everyone have the same access to public transport?
Lastly I was on a Renfe train in Spain this past week and the trains roll out a ramp automatically on the accessible carriages to the platform without the need for staff, and I'm sorry to say I was delighted and impressed. Why can't we have that in Britain? Then I saw on Twittex that the Rolling Stock Company who provides trains on LNER, whom Dame Tanni was travelling with, is a major donor to the Tories, and, should have put in fully accessible carriages by 2020, but the Tory Government of the time, didn't GAF about PT in general, (hence the NR strikes) so didn't enforce the change.
(Sorry for the ramble. Being in the industry can make you a bit boring sometimes)