I dont think there are "rich pickings". Hes been in politics for 30 years and scrutinised and pilloried throughout. People know what they are getting already.
The latest story about his school days is desperate and ridiculous because it's clearly a political hit job (particularly listening to one of the "victims" describing what happened 50 years ago on Radio 4 and then ruining it by then criticising Farage's current politics which was amusing).
Most people are reasonable. Most people don't judge a person on their behaviour at school many decades ago in a different time with a different culture. People criticising Farage as a child are at the same time supporters of current and former Labour Cabinet ministers or PMs who behave badly now as adults while actually in power.
Having said that I do expect the hit jobs to continue from Labour. Dominic Cummings predicted they will go for everything they can. Bank accounts, health records etc by fair or foul means. Not pleasant for anyone. But NF should take some comfort in knowing that most people (even if they aren't Reform voters) will know what Labour are up to.