Hi, we had heard this too so we had one of our colleagues test their iPhone 7 home button through a case. It worked OK. https://www.youtube.com/watch?v=K5hHDc7_NVU This is the correct case for the iPhone 7: https://aquapac.net/shop/waterproof-phone-cases/waterproof-phone-case-small/
iPhone 7 home button