in my humble opinion such a tactic just makes the rosh yeshivos look out of touch to their talmidim
There is famous story when Rav Yaakov Kaminetsky was 6 years old. He was walking to chedar and was asked to get something for a Bris. Because of this he was late to Chedar. When he got to Chedar ,his rebbe said to him Yaakov, Why did you stop by the construction site and watch the machines and then slapped him hard across the face. Rav Yaakov never forgave his Rebbe for that. Not all Rosh Yeshivas are looking out for their Talmidim.
Perhaps the Talmid who watched the Soccer game was burned out from Learning from 7am to 9pm and needed a break. Not everyone can learn like that and those that cant are an issue. Maybe the Rebbe was wrong and should have realized the Talmid was burning out and a break of a soccer game is what he needed. And dont say Burning out doesnt happen. We all know that it DOES happen