Looks to me like 6 in the backfield. I thought that before you drew the lines showing where they were lined up as well. I think this is definitely something that shouldn't have slipped by, but I do understand the refs have a lot to watch and I do understand that some could be a judgement call as the the gentleman replied to your first post that the TE needed to move up a little.
The first picture could definitely just be the refs allowing them to play, but hopefully he asked the TE to move up.
The last picture, unquestionably too many. I wasn't there so I'm not sure what led up to the referee saying what you stated he said, but if that is the case then maybe he is really confused on the rule as that's an obvious to me at least.
I will say most of the refs I have been in discussions with over a rule have always been very professional about it. Sometimes when you know a call isn't going to change in a game and you talk to them afterwards they will apologize for their mistakes as they do have a lot to remember between the Mitey Mites, 3rd & 4th, 5th & 6th, and HS games. Although, this was a standard well known rule.
Maybe just a confusion on what they thought you were talking about? Maybe they thought it was an issue with a 2 striper you were referring to?
Either way, thanks for the post and the pictures to enlighten us exactly what you mean. Much better than just posting a complaint.