I disagree TBH. The ideal is to strike a balance. To get 20 deaths and a 0.2 K/D ratio he must have been pretty reckless. If everyone followed suit, the match would be over quickly. Your team would lose.
Playing for the team is the most important thing, true. But the aim is to do that without wasting the team's tickets on suicide runs toward heavily guarded objectives. The only class that maybe has an excuse is the Medic, though I'd argue it's better that Medics stay alive and take the easy heals/revives, rather than doing suicide charges toward downed allies who are in view of the enemy.
pro tip
respawns no longer effect tickets in conquest. Die as much as you want, it won't affect the overall score. Only flags matter now.