Ratliffe family theory

I’ve seen some theories floating around on here that their story is based on the Peterson Family / The Staircase where two of the children were adopted and had the last name Ratliffe. All the similarities seem a little too coincidental to not be on purpose, combined with the weird way the siblings interact with each other and not seeming very close.

My personal theory is not that any of them are adopted but that they are a blended family. Mom and dad got together when they each already had kids of their own. Saxon is dad’s biological son and Piper and Lochlan are mom’s biological kids. Saxon went to the same college as his dad and Piper the same as her mom. Piper being bio siblings with Lochlan explains her wanting to room with Lochlan (also a fan of the theory that Lochlan is gay and Piper knows, or that Piper has experienced some shady stuff with Saxon and is trying to protect Lochlan). And explains why the kids don’t seem fully comfortable together and not very close. Although still icky it makes way more sense that Saxon spoke about Piper being clearly hot if they are step sibs. Saxon is trying to bond with Lochlan and take him under his wing as his new little brother. Lochlan as the youngest and the odd one out (who may also be confused about his sexuality) is torn between both sides.

I think maybe some shady stuff has been done by Saxon or the dad to the other kids and the mom stays doped up to cope with it and avoid the issue. She wants to pretend like everything is fine like when she insists that they are a normal family.