There are flexibilities in there Dave, as Brian explains. Other than what is already printed in the General Rules document, there are no further dispensations.
There are lots of summits available for activators with disability here in the UK, and SOTA has (in my opinion) a proud record of successful participation by disabled activators.
The Burton ARC “Easy SOTA” page is useful, but includes a number of summits that do still require some physical ability, even if relatively trivial. The following is a list of summits from my own SOTA history, where I have been able to drive into the activation zone (or very close to it) and participate in accordance with the rules by walking away from my car and setting up an independent portable station:
EI/IE-021 Black Mountain
G/CE-001 Cleeve Hill
G/CE-005 Wendover Woods
G/DC-003 Kit Hill
G/DC-004 Hensbarrow Beacon
G/DC-005 Christ Cross
G/NP-028 Rombalds Moor
G/SC-004 Staple Hill
G/SC-005 Selworthy Beacon
G/SC-008 Win Green
G/SC-010 Dundry Down
G/SE-001 Walbury Hill
G/SE-003 Black Down
G/SE-004 Butser Hill
G/SE-005 Botley Hill
G/SE-006 Ditchling Beacon
G/SE-007 Crowborough
G/SE-008 St Boniface Down
G/SE-013 Detling Hill
G/SE-015 Cheriton Hill
G/SP-010 Winter Hill
G/SP-013 Gun
G/SP-017 Billinge Hill
G/TW-004 Bishop Wilton Wold
G/TW-005 Normanby Top
G/WB-005 Long Mynd-Pole Bank
G/WB-011 Bradnor Hill
G/WB-016 Wapley Hill
G/WB-018 View Edge
G/WB-021 Ruardean Hill
G/WB-023 Hegdon Hill
G/WB-024 Aconbury Hill
GD/GD-005 Mull Hill
GI/AH-010 Slievetrue
GI/AH-011 Cross Slieve
GI/CA-003 Carrigatuke
GI/MM-017 Cairngaver
GW/MW-026 Long Mountain-Beacon Ring
GW/MW-029 Hafod Ithel
GW/MW-036 Pen-crug-melyn
GW/MW-037 Brandy Hill
GW/NW-064 Mynydd Rhiw
GW/NW-070 Great Orme
GW/NW-071 Mynydd Bodafon
GW/SW-018 Mynydd Eppynt
GW/SW-028 Mynydd y Betws
GW/SW-033 Wentwood
GW/SW-036 Mynydd Sylen
So you don’t need to be Bear Grylls to be knocking on the door of 50 activator uniques. Aspirations for Mountain Goat need to be accompanied by a bit more physical effort though.