TJ is a non-parent. He has seen other parents doing things before, therefore quotes that as a way forward for parents. He therefore has a point and it should be placed in order of merit along with his views on how to defuse bombs, his experiences with the Mars space program and his thoughts on Scotland.
A baby car seat strapped into a baby trailer is the nearest thing to safe I have seen for such an infant. I didn’t do that with ours as I didn’t think it was safe enough. Once she reached 6 months old we ventured out and then it was borderline (IMHO) but we were all happy with it.
We used a Baby Bjorn – but I would NEVER have ridden a bike with it on – ever.