Yes, I realise this.
My point is that before Marcati mentioned that he needed to produce his WP at the oath ceremony, the majority of people had confirmed (as you yourself mentioned) that they didn't need to show their WP at the DOPA interview or after.
If showing a WP at the oath ceremony is now the standard official requirement, this significantly alters the amount of time that I need to maintain my WP, regardless of when my files were submitted to the MOI.
Before Marcati's post about the oath ceremony, I made a post here asking other people when they last had to show their WP and at least one guy replied that it was early on and he was nervous when he had his MOI interview as he no longer had a WP (he got away with it, fortunately).
Therefore, I'm very keen to find out when other successful candidates were required to show their WPs in order to get a better understanding of whether Marcati's situation was an exception or the new rule. If any posters gain citizenship this year or next, I'd be really interested to know as it drastically changes the timeline.