There’s another possibility that could’ve factored into this decision…
…more and more average JWs working door-to-door, trolleys, and park tables encounter “apostates” who they can’t defend their faith from (without lying), and/or regular householders who know too much about the Org’s pedo problems, and aren’t shy about it (like back in the day when they were accused of being “false prophets”, only way, way worse 😏).
I think it’s entirely possible that we’ve reached a critical mass of nonmembers who know too many uncomfortable facts and truths, and it’s actually started to have a negative impact on the witnessing work.
Changing up the ministry could be an attempt to insulate the rank-and-file from that.