It is almost impossible to know the answers to these questions I think. There might be very limited discretion in very specific cases I guess. The onus here is very much on the landlord and the “oh yes the rules that apply to everyone else do not apply to us” is getting more and more common.
But I do have a suggestion.
I would add the landlord to clarify the position in writing with the Regulator of Social Housing. They are very helpful in my experience. Or do it yourself via links below.
https://www.gov.uk/government/organisations/regulator-of-social-housing
Please contact enquiries@rsh.gov.uk or call 0300 124 5225
