I've seen no evidence of that in the UK although admittedly I tend not to go round asking people.
That, once again, is because you actively don't want to find out. If you change your mind, you still have two days to register for the Birmingham FE convention
But hey, if you really don't want to acknowledge it, I won't waste my time trying to force you. I have better things to do - for example, working to further expand the movement!
I know this is from 1997 but still 4% of the US population back then was significantly more than 500 people...for context
And why would you compare a number of people who believe in something to a number of people who attended an expensive event
where no more people could attend, as it sold out?
It is also interesting to see, that this mainly a US phenomenon. E.g. the interest ratio between the USA and Russia is 100:3
That's rather unremarkable, given that Russians would obviously be searching for "плоская земля". Suddenly, the ratio is 3:1. Other European countries are left as an exercise to the reader.
If, instead of using keywords you rely on Google's identification of topics, Indonesia appears to trounce other countries in FE popularity. The USA falls art 59% of that popularity, and Russia at 27%. This, of course, brings us even closer than the 3:1 found through keywords.
Overall, your statement was a rather poor attempt at cherry-picking data.
A lot of people believed a wrong thing, that didn't mean it was a valid thing to believe.
You're copping out. You started out by objecting to the suggestion that FET is growing. Now that you've been provided with evidence, you're shifting the focus to whether or not you think it's of any significance.