No, it doesn't, it only does so under certain conditions. For bidirectional communications it is *always* better to use a more efficient aerial. It's interest

No, it doesn't, it only does so under certain conditions. For bidirectional communications it is *always* better to use a more efficient aerial. It's interesting that you think "better SNR means faster". How do you think that works? How would you stream a couple of 4K video feeds over say the 40m band? Do you think other limitations might come into play before SNR ever did?