I don't know anything about politics in the UK, but in Australia one of the big things correlated with conservative politics is growing up outside a big city. Rural and regional communities are under-served in everything from healthcare to transport to job growth. Coming from a working class background can also make it hard to keep up with the euphemism treadmill and know what's politically correct, even if you're on the left.
I also don't think outright racism is the only taboo viewpoint. Example contributions could be "I think male and female should be the most prominent gender options because my grandma wouldn't know how to use this device if she had to scroll through our current alphabetised list", or "do we really want to stick a gigantic Black Lives Matter banner on our website when 37% of our customer base supports Blue Lives Matter and will hate us, and 40% have no strong opinion"? If someone is skeptical about a political message, they'll be able to notice problems that the less skeptical don't.
I also don't think outright racism is the only taboo viewpoint. Example contributions could be "I think male and female should be the most prominent gender options because my grandma wouldn't know how to use this device if she had to scroll through our current alphabetised list", or "do we really want to stick a gigantic Black Lives Matter banner on our website when 37% of our customer base supports Blue Lives Matter and will hate us, and 40% have no strong opinion"? If someone is skeptical about a political message, they'll be able to notice problems that the less skeptical don't.