First off: make sure you clear your quotes/replies. I've done it before and it really is the most annoying thing to happen because if you're not careful, it screws up a post and makes it unreadable.
And secondly, yes, it is a cop-out because the same statement about the angular resolution can easily apply to the Yr Wyddfa and Alps situation as it is with me and the Isle of Man. In fact, the Alps should be still be harder to see from its distance of 950 miles even from a mountain top BECAUSE of angular resolution of the eye. It does not stand to basic reason that I have less of a chance of seeing the Isle of Man when I'm at the same level as it than someone on the top of Yr Wyddfa should be able to see the Alps, even though the latter is at a significantly greater distance, by a factor of 13.5.
And it is my point. I cannot see the Isle of Man on a flat earth, even though by every description of the flat earth and every claim by a flat earther, I should be able to, yet I cannot on a spherical earth because of the horizon.