なぜなのか

親の再婚相手の事で聞きたいことがあります。
https://mi.5ch.net/test/read.cgi/news4vip/1692987749/

https://i.imgur.com/kQQwkDi.jpg
https://i.imgur.com/O1yIadi.jpeg
https://i.imgur.com/CpTEhea.jpeg
https://i.imgur.com/a4ZOdTJ.jpeg
https://i.imgur.com/OpTxnc5.jpeg
https://i.imgur.com/A8KlcqL.jpeg
https://i.imgur.com/bkVylrn.jpeg