The first example you give is not netorare and games that are tagged that way because of that content need reported to be reviewed.
The second is netorare if it follows the tag definition. Even one scene in a game gets a tag for any tag.
The third example you give is not netorare and games that are tagged that way because of that content need reported to be reviewed.
The fourth example you give is not netorare and games that are tagged that way because of that content need reported to be reviewed.
If you find a game that I tagged netorare and does not follow the f95 tag definition, the staff wants people to use the REPORT button in the game thread's first post and state why. The staff will review the reason.
As for people on this site using it wrong, I agree. But if they aren't informed, they'll never have a chance to learn.
As I said, you are correct about those cases, my point was simply that since it's incorrectly used so much, just telling people that filtering by the tag gives them what they want is not particularly helpful.
Also, #2 case, while it might technically count as NTR, is clearly not what the OP wanted, so "any NTR" is also not really a helpful answer to OP's question. It would be equivalent to pointing people towards a game that has a single pregnancy ending when what they asked for was a game with pregnancy
content. There are a lot of games where you as the player see what is happening, but the MC doesn't know until the very end. There are also games where you as the player don't even see it (but obviously know because you know what the game is about) until the end and only see it later as flashbacks or alternative viewpoint.
Though ironically I'm not particularly helpful either as the only ones I've actually played were the ones that were incorrectly tagged, thus not what the OP wants. But it annoyed me that they were tagged so.