No, I wasn't sweeping anything under the rug. My wife and her sister still kiss each other on the lips when they see each other after not being together for a long time. There has definitely never been anything sexual between them. And when I was a kid dreading slobbery kisses from mostly old ladies... there was absolutely nothing sexual about that either. I can't speak to the reason you keep making kind of weird assumptions about my description of family events which many others recognize as similar to their own. My assumption is that something bad happened to you at sometime that is coloring your perception.
The thing that you do not seem to understand that could be a problem is that people from different cultures, backgrounds and even time periods view things completely differently than you seem to. Unless you are a member of some offbeat religious sect the vast majority of people who are from your own culture view things completely differently from you.
My eldest is 40 and engaged, saving himself for his beautiful bride.
Our eldest is 42 and our youngest is in her mid 30s so I assume that we are approximately the same age. We know many people who home-schooled their kids and it almost always turned out very well even if they did it mostly because they were overprotective and controlling. Unfortunately, people who are overprotective and controlling end up with children who cannot be honest with them even after they are adults. There is a very slight chance that things are how you think that they are. But it is much more likely that your eldest is being forced to put on a false front to keep you happy even as a middle aged adult. And I feel sorry for you if you have kids who do not feel like they can be honest with you.
And I should add that everyone’s kids put on a false front for their parents. But it varies depending on what they believe our expectations are. So you are no different than anyone else in this respect.