See, there is one which reads, after an argument, "Good morning, I hope you slept well, off to gym." which is taken as evidence of their resolving arguments quickly.
My STBXH would do the same, if we had a row in the evening, he would drop off to sleep no problem, then the next morning it would be like nothing happened. If you say, no, actually, I didn't sleep well, I was too churned up, what on earth was that about?, you are bringing things up again, and as you don't want to rock the boat, so you say, yes, of course I did, enjoy your day.
The texts on the BBC are, to me at least, obvious red flags for an abusive relationship. But I think, societally, there is a massive minimalisation of abuse - but seriously, in the context of this trial, the fact that 90% were (apparently) loving seems to miss the point.