The world rejects universal informal address: 70 % no against 20 % yes, with 10 % having no opinion.
Both genders reject the idea in similar proportions, but not in the same way: among men, refusal comes with a small supportive minority and no hesitation at all; among women, nobody backs universal informal address, and the remaining quarter prefers not to decide.
Age produces one sharp exception. The over-65s, the 18-24s and the 55-64s refuse heavily. Only the 25-34s flip entirely to the other side, while the 45-54s split in two: support is concentrated in a single generation.
The debate is unanimous in its refusal, but it never rejects informal address in itself: it rejects making it universal. The rule everyone describes is the same. Family, friends, colleagues, yes; older people, strangers, hierarchy, no.
One voice illustrates the limit with a workplace scene: hard to greet your director with an informal « how are you? ». Another states it in English as a matter of politeness: informal address can seem disrespectful or over-familiar in some situations, and adapting to context is a way of respecting other people's preferences.
The only voice open to the idea is also the most honest about its cost: perhaps we should, to feel more equal, but it would be strange at first. The thread is therefore not arguing about manners, it is arguing about the distance a single word lets you keep.