Wow I am really surprised by the reaction to this. It's not how I parented DC1 but it is really similar to DC2 out of necessity - DC2 is breastfed but I do wake to feed if he hasn't woken first, if I don't he will need feeding when I'm doing pickup or bath.
After settling in my arms (or if he hasn't settled but DC1 needs looking after) DC2 goes in his Moses basket which comes with us from room to room.
True the language could have been subtler and made clear its one way to approach things, but I equally get frustrated with some of the advice on MN which often seem to be along the lines of "yes that's shit my DC was like that it will get better in a few months". Whilst it's good to know that others have gotten through the same issue, it can also be pitched (or read by new mums in that way)as some sort of right of passage to get through, trying different approaches like the routine suggested here is no bad thing.
I would also add that the word routine seems to be a dirty word. Routine doesn't have to mean GF and from a MH perspective I know for me personally that it was only when I started to have a small routine and an understanding of what my DCs liked /didn't like as babies that I felt better and more able to cope when said routine went sideways.
Whilst I'm ranting - napping in your arms. It's lovely to do this and I still do this with DC1 on occasion. But I also accept that it's not optimal in terms of getting them to sleep on their own. It's a choice I make because I want to bond/do skin to skin/ have time to cuddle/ can't deal with prospect of screaming/no nap at that point. As we have no family both DC1 and 2 have been looked after by a nanny (whilst I look after the other) and both sleep and have gone to sleep more easily for the nanny become she is much clearer and stricter on routine.