Are all teams like this? *Long Post Warning*

I hope not all teams are like this, but since Ive only been on this team I got to ask.. Are all teams like this?

Our team at the beginning of the year had a good 30 students which is actually good for our school, with many of those students being grade nines (even better) but it seems the team leader didn't want to set-up anything to help the new members feel welcome or help them learn anything and by idk probably the 4th week the team was back down to about 10-15 members max.

After loosing the majority of the members the leader took it upon himself and two friends to take the robot home and basically build it at their houses with out the help of any other members, keeping as much work to themselves as they can to be "all-stars" the only time they would bring in something for another member to do is when they didn't want to do it like grinding or drilling holes.

So now that the build season is over and only a handful of people have worked on the robot (not to lack of interest by other members or will of other members) the leader of our team decides they will go to the first competition with only about 3/4 of our team (basically the members who are more "buddy buddy" with the leader) leaving the rest behind who showed up to meetings, those who wanted to help and learn, those who wanted to have fun but ended up having zero, those who dedicated their lunch hours to be apart of the team and got absolutely nothing out of it.

Not to forget the drivers, human player, and coach are the leaders buddies or him, and they are dffinantly not the right people for the task. No driver or player tryouts were held, when everyone on the team knows there are better suited people for the spots then those "picked".

One more thing is I was supposed to go until the leader/captain of the team asked me "Are you driving people" and I said "no I do not have a car" in which he followed with "OK your not going to the competition" and its funny because our 'staff advisor' watched everything go down like this and basically encouraged it.

So I ask again are all teams like this?