The whole show looks to be designed around Marty. Given that they only show 1/2 hr snippets every day, the producers can manipulate the audience by only showing what they want people to see.

Marty is really an alien waiting to takeover the world.

Most of the voters are teenage girls. Who else would be silly enough to vote.

Apparently they charge about $85 to see evictions live - what a rip-off. $85 to watch someone walk out and giggle non-stop.
Even some of the 30yo people on the show were acting like 16yos.