No, you just hate PvP. There's no need to defend PvP in a game called Elite Dangerous and featuring combat at the very core of the game design.
First and foremost, "combat" does not equal "PvP". I can have combat all day everyday versus the NPCs - if it was Elite PvP you may have a point, but as it is not, you don't.
Second, if combat is such a huge part of the game, why is it only 1/3 of the ranking system? With Trade and Exploration taking up the other 2/3.
If solo (and private) profiles ever get cut off from being able to jump in to open - people will just leave open play and stay in private groups, so you will end up with less targets not more. Under the current set up, people can move back and forwards as they feel ready to (not when you want, when they want) and stay for as long as they feel comfortable (not for how long you demand).
All your currently demanding, is for people to be permanently forced out of open play and ruin the experience for open play traders and explorers who may happen to bump in to someone who does swap between the two.