If that's me you are talking about its an incomplete picture. MOST of the strips were long since out and only some groups of nucs, which had had them inserted very late, still had to have them removed. There were reasons for this and I did say it was not a situation I was especially happy about, but disturbing the nucs in Dec/Jan to remove the strips from the centre of a tight cluster was a worse thing for the bees than just leaving them alone until they were less dormant.
Amitraz...in this case in the form of Biowar...is slow acting and some makers advise longer times in the hive than others. 2 to 3 months is not a huge issue.
However....varying the treatments is always wise. Much more important that they work too, not just by internet chatter or fashion. LOADS of false prophets around on all manner of bee related topics.