Fair enough. I agree that the advice on those groups is generally good, and I think most of their advice is spot on. There are a couple of car seat things which I can't find good evidence on, though, and those are:
- So-called "expiry dates" on European car seats. Not a thing. Though there are good reasons not to use older car seats, and you may want to use the expiry date idea as a rule of thumb.
- Supposed benefits of forward facing harnessing over HBB after 3 (actually, there's no evidence for it after 2, but it would be a rare 2yo who would fit into a HBB so let's say 3)
- Lie-flat seats for newborns, especially full term newborns. There are a few scenarios where they may be beneficial but mostly I think they are a gimmick.
I do highly suspect that the first two are getting mistranslated from North American car seat advice, which is different because US/Canadian car seat regulations are very different from ours.
RF is definitely safer. It's safer for everyone except for obviously the driver! In fact, if we could reliably find a way for the driver to be able to navigate safely while RF, it would be safer for them too. There is no age or weight cut off where RF becomes less safe or equivalent to FF, however, the risks of travelling FF are much higher the younger a baby/child is because of their heads being so large in proportion to their bodies. When you look at crash data the highest incidence of deaths (sorry) occurs at around a year of age. This is part of why the new regulations stipulate 15 months minimum RF, and parents should be aware that this is the highest risk point. Personally, I find that the risk drops acceptably after this point, especially after 18m/2 years if you can stretch that far, so I'm not personally too worried about FF after this point. BUT, I do agree that it is safer to RF, and if safety is your only or #1 concern, then absolutely RF is the way to go, for as long as you feel it is necessary or indeed as long as you can!
Also, the fear that children will break their legs seems to be unfounded and based on a poor understanding of physics - perhaps based on anecdotes about passengers having their feet up while in a forward facing position, which would almost certainly lead to broken legs (or worse) in a frontal crash, especially when they are resting on a panel with airbags inside.