Yes that makes sense. If you think about it, Michael is a character we learned very little about. They gave him enough backstory to get him going (i.e. the divorce, the kids, the failed business) and then there was little more. Did he ever mention his parents or any siblings, for example? I wonder too if there were ever plans to bring in Kate, his estranged daughter? The writers seemed to forget about her once Michael resumed his relationship with Pippa.
I've never been able to believe that the two Pippas are the same person. Even if I sort of managed that, I couldn't see VanPip being with Michael, nor DebPip with Roger. Both actors worked well with their version of Pippa so that was a job well done. Recently, I stumbled across a podcast that Debra and Dennis did with Cameron and Daddo last year https://podcasts.apple.com/gb/podcast/does-keeping-the-romance-alive-matter-debra-lawrence/id1463023422?i=1000653111872 Dennis was quick-witted and funny on it. It's a real shame that that side of him never really manifested itself on Home and Away.