they were called trailers for a reason
I don’t think he’s complaining about movie trailers. He’s talking about the Coca Cola and 12 year old M&Ms advertisements that run for 10 minutes BEFORE the theater plug and trailers start.
When I went to see Deadpool and Wolverine, I think the projector fucked up and we had to watch the ad loop twice. When the movie finally started 25 minutes late, people cheered just to see the Marvel logo