He just extends the game to the most boring 35+ minutes of your life by threatening a side lane and E’ing away. No solo laner can match him because he’s very interactive with R.
Playing ring around the rosie for 35 minutes and hoping your team knows how to outplay him fucking sucks.
The problem with Tryndamere is, unless your team actually knows how to play, he’s even more dangerous than Yi, but once you know how to keep him away, you will easily win the fight, especially since Tryndamere will avoid team fights like the plague