I'm truly shocked that a goal keeper doesn't agree with me. As I have stated multiple times, I don't believe he is trying to injure someone intentionally, but I think this way of jumping is inherently dangerous to anyone involved in a collision with the keeper, and that this is intentional from the keeper's perspective, to discourage people from challenging them/colliding with them. You have literally confirmed this in your post, so I'm not sure what your point is. Can I go into a header with my elbows up, to ensure I don't get hit in the face by someone else's elbow? No, because it's dangerous and it's considered a foul. Keepers just do whatever they want in tackles, and never get called up on it.
Well, going up high to collect a cross & one’s knee comes into contact with another player isn’t a ‘tackle’ by the definition of the word.
Yes, it’s to dissuade collisions from opposing players. That’s partially why the rule exists. Do you want to go back to when keepers were basically tackled by opposing players? This small semblance of safety is rarely used as an offensive weapon, basically never.
Again, as stated earlier, if you remove the ability for a keeper to use his / her legs as a body propellant to make saves, collect crosses, etc., you change the game radically. Then there shouldn’t be any balls played off the ground. See how silly that sounds.
Thankfully, criticisms like yours will never be taken seriously by the world governing bodies of football. We can agree to disagree here as we will just be wasting each other’s time discussing a fantasy land that will never come to be.