I agree with @Lundeand others pointing out how different society was. My late DF had dealings with JS. He first came across JS in the mid 1960s when my DF was living in Leeds. He didn’t meet JS but he lodged in an area where JS was well known locally and even then the general sense was to keep away from him without there being an explicit information about why. He wasn’t particularly liked by the local population from what my DF picked up. My DF was a 24 year old man so probably didn’t think much more of it and only reflected upon it later.
Then in the 1980s when my DF was head of a large charity JS was invited by someone in the Leeds office to raise money for the charity in various high profile events. This was the first time my father met him and he hated JS from that moment, but it was instinct, something he couldn’t put his finger on, an obvious lack of sincerity, a subtle cruelty to certain people, some sort of disconnect between the national treasure persona and the way he spoke to people off camera. Others felt the same as my DF but even as recently as the 1980s we communicated very differently and there was no information in the public domain to confirm people’s instincts as correct. Apart from a few people who must have known what he was like, the vast majority who knew him, regardless of their personal dislike of him, had no idea of his true nature.
I met him as a 12 year old girl in 1979 at some charity event and I remember being really excited to meet him but when I did I remember recoiling slightly and being really aware of the superficiality of his greeting, again, an instinct, not knowledge. I also know that he was tolerated by King Charles, not particularly liked.
He was, as PPs have said, highly manipulative and used sheer force of personality to insert himself among the powerful. He wasn’t liked at Stoke Mandeville Hospital by many of the staff but when the world is celebrating him as a force for good how do you become the lone negative voice? There was no social media. Safeguarding, grooming, believing the child; none of these concepts were in our collective consciousness. There wasn’t the same cynicism of authority figures generally. Different times and really hard to understand now that we have the full story, a different understanding and approach to the protection of vulnerable people and a less deferential attitude to people in power.
When the first information came out about JS my DF found a signed copy of JS’s autobiography that had been lurking on a bookshelf for years and burned it in the garden. Angry with himself for having tolerated the man for a few years despite his instincts. I imagine others felt the same as my DF did.