Unlike the other champions with "no counterplay" (Jax, Yi, etc.) Hecarim literally has no counterplay.
The game quickly turns into him just using predator every 5 seconds and running to each lane **literally** one-shotting everyone with his undodgeable, unstoppable, un-blindable, Devastating Charge. There is absolutely nothing you can do against him and it isn't fun in the least bit.
Even playing as him feels like bs.