"It may well be that the reduction of SIDS associated with breastfeeding is due to other factors like where the baby is likely to sleep when breastfed or socioeconomic factors like the parents of breastfed children being better educated and more knowledgable about prevention or being able to afford a better standard of baby gear (eg not second hand mattresses)."
Yes - but the research controls for all the factors, such as socio economic status, smoking (smoking is also associated with lower rates of breastfeeding, and higher rates of SIDS), and more likely to bedshare, which (as you say) is currently believed to possibly contribute to higher rates of SIDS because of the issue of overheating. That's what decent quality research does - it tries to control for as many variables as possible in order to isolate the effect of particular behaviours. I respect the information given by the Lullaby Trust and by the NHS - they have waited many years to include advice to breastfeed as a SIDS prevention strategy in order to allow for a body of decent evidence to accumulate - one which properly controls for the multitude of factors which may impact on susceptibility to SIDS.
"It's not scientific to say that it's 'caused' by breastfeeding. And to some extent downright irresponsible. For example if a mother can't breastfeed (which is the case for adoptees anyone has to accept) then you shouldn't just rule out the other factors such as having a baby sleep close to you, being aware of things such as hygiene and back sleeping and not reusing old mattresses."
But nobody is doing this are they?
alert - straw man argument!
Parents should be given information about all the things which are associated with SIDS reduction. ALL the things. It is up to them how many of the recommendations they follow
"Nor should mothers who breastfeed be told that it's a magic pill against SIDS when it's not"
Again, nobody is doing this. Nobody thinks breastfeeding is a magic pill. It appears to reduce the incidence of SIDS by about a half, but there are other things that are important to consider - smoking in pregnancy, prone sleeping etc.
Have to ask you - why are you implying that I or anyone is presenting breastfeeding as a magic bullet which confers 100% protection against all illness? Nobody here has said this or implied it, least of all me. It's what they call a 'straw man argument' (see above). Ie, you take a point which has not been made, but which is easy to refute. You argue against it in your response as though the poster you are answering HAS said it. Other lazy readers see it and latch onto it. Perhaps they have only skim read or not read at all the post you're referring to, but they now have in their head that someone is arguing that breastfeeding is a magic bullet which prevents all illness. NOTE: nobody has said or implied it, so there is no need for you to address it in your response.
"And it is hypocrisy. You are in favour of co-sleeping and you appear to be perfectly able to understand this principle when it supports something you like and you can reel off a list of other factors which affect the likelihood of SIDS when co-sleeping such as smoking, alcohol, bedding."
"Yet when it comes to SIDS and breastfeeding you suddenly become unable to understand exactly the same principle. confused"
Not sure what you're saying here? I'm not saying that people should or shouldn't breastfeed. I'm not passing judgement on your parenting choices. I'm saying that breastfed babies as a group get less sick, less often than formula fed babies as a group, and that some babies will get sick from not being breastfed. I'd also argue that whether you can perceive it or not as an individual, how we feed our babies does affect them - their development and their health. You know - you are what you eat. It's not a particularly radical idea. I don't think expressing that view should open you up to a slapping down on the boards. It's a perfectly reasonable stance.
In the end, all parenting choices have risks and benefits for us and for our babies. I have no problem with people making different choices, and I'm not making a case for having made perfect choices myself.
And TBH - it's sad that these discussions always come down to someone making a playground accusation along the lines of 'you think you're better than me'! We're adults. We shouldn't engage in that sort of personal crap.