Also they are the default view, I’d argue suggestions are a lot more than just “suggestions”. It would be akin to a restaurant “suggesting” their menu, and you’d need to interrogate the waiter to explore what else you could be served. For most people the menu is effectively the representation of the food of the restaurant.
For the neutrality, if you recognize there are agreed upon rules, as you point out, the next question becomes who agreed on these rules, and who made them ?
Who agreed nudity should be banned ? Which country ? What nudity ? and art ? and educational content ? and documentaries ? at which point does it become nudity ? The more we dig into it, the more it becomes fuzzy, everyone’s boundary is different, and all the rules are like that.
Any rule in place is positive to a group and negative to another, for a rule to stay in place it needs to have more supporters than detractors, or put it another way have more positive impact than negative ones.
The current set of rules are the ones that were deemed worthwile, I think it’s healthy to chalenge them or to push for other rules that could garner enough agreement to stay in place.