I'll take your statement 'wrong' and double it - read this and please dont try and excuse doctors - even though you may be one. Also doctors shape the means by which they provide the contracted service to the NHS If they choose to employ a practice manager, nurse, receptionists, its up to them but the service to be provided remains as does the NHS requirement to PROVIDE A PUBLIC SERVICE
https://basc.org.uk/blog/press-releases/latest-news/basc-urges-members-not-to-pay-gp-fees/
There's even a statement near the end of the article by a BASC Council Member and Psychiatrist, condemning GP's pecuniary response. GP's reps changed their minds and reneged no ifs or buts.
Oh I presume the meeting of the medical working group also endorsed the doctors opt-out for 'conscientious objectors'. I dont see anyone being justified changing contractual terms as they see fit - maybe if you are a smoker they will refuse to treat you ?