When my 8 yo was a baby, ERF was a niche, expensive, pretty much online only product. I had a 0+ seat which DS1 stayed in until he began screaming constantly through every journey. DS2 lasted until 15m. It helped that he had a squarer build and with DS1 being long and lean, weight guides are irrelevant to his body. He's still under 25kg, so could hypothetically ERF... not very safe if your knees hang out through the car window though
I contorted him into his stage 1 seat as long as I could because his body was too long for it and head getting too high, but he was still technically too light for a HBB.
Cultures take a while to trickle down. Legal changes have helped, but there are still people out there who don't even use car seats or use them poorly. That's a worthier social battle than getting het up over the virtues of very safe car seats over very, very safe car seats where the risk of serious injury/ death is incredibly low. As the example of the eye injury, sometimes it's not a simple choice without consequence. The consequences of an individual accident will have so many variables, it's not often that the ERF seat will have superior protection to a well fitted and properly used FF seat. It does happen, but there are so many other practical circumstances to consider like getting it in the car and child being content.
I knew one baby who screamed through every car journey to the extent where he would regularly stop breathing. He was turned to FF at 6 months when he was big enough to meet the minimum weight and was instantly happier. Driving to constant screaming is not safe. Regularly pulling up randomly to check your baby is still alive is not safe. In that case, baby was safer for being turned unusually early and he still remains a very car sick child.
I think BFing got mentioned due to the subset of very idealistic BFers who are very staunchly ERF, baby wearing (and shudder at the words Baby Bjorn), cloth bumming and baby led weaning etc. I say this as someone who did a lot of these because they happened to work for me, but there was a significant number on fb groups who were very pious about these optimal lifestyles and judgemental about those who did it "wrong". It's the absolute attitude that gets people's backs up regardless of topic, but people especially don't like insinuations that they are failing their children when they are doing their best.