I remember, thought it was quite a long time ago, that US Citizens needed visas for France.
Also, we forget that we are in a VERY VERY VERY serious minority. Like they say, at any given point there are 250,000 Americans within the M25. A lot of those are visitors. If we say, UK wide, there are maybe 500,000 US expatriates in the UK, that is about 0.15% of Americans. Prior to the passports at border crossings < 10% of Americans had valid passports.
The Office of Statistics says that there are about 4.4 million visits per year from North America. They don't count unique individuals nor break down the US/Canada/Mexico nor those who might be non-North American citizens. But still, that is less about 1% of North Americans visit the UK every year. I supect the vast majority of those take some lame pictures of them standing in front of Big Ben and thereby impeding my progress across the bridge, or they wear their Cowboy hats and speak loudly on the bus taking them to pick up their hire car in Scotland only to realise that it is a manual transmission and jerkingly exit the car park. Very very few of them are like us where they will be in a situation where they maybe tempted into doing something that complicates their future in the UK. They come, speak loudly, buy their tat, eat a pork pie and go home. Then there is the 330+ million that never come here.
Yeah, I suspect Michael Douglas or Madge applying for their ILR doesn't really make the front cover of People, but I remember the curfuffle that Mike Tyson had not too long ago that I think did get note on CNN.com for being a person of bad character and not being allowed in the UK.
While I agree it is frustrating at times, and sad at others that some people get caught up in the finer points, I would think that we want to a) continue to focus on educating those who do find us and b) make sure that UKBA continues to play fairly and consistantly with the rules, which is what is at the heart of the Advocacy here.