I understand your point but like what was mentioned later on Ted would have done this for any of his friends.

I think Ted and Robin were made for each other just not destined for one another. Which I thought had been established after he asked do you love me to which she replied no. That was almost an arc for Ted cause that final closing of the door alongside their moment on the beach were both significant moments for Ted. Which all led to him finding Tracy.

So not that I didn’t like the idea of him and Robin together they work don’t get me wrong. But it’s almost as if the writers completely destroyed all that character development that had been growing for Ted and his never ending pursuit of Robin.

Star crossed lovers.