I wouldn't boycott 'spoons for last year. Seems rather petty given no-one (including myself) warned them of a hundred + cyclists turning up and given other lower key events inc. Teethgrinder 2years ago. The ACME teams amongst others may be significantly hit by such a thing.
What was unfortunate was having Chris and Martin actually present as everyone arrived as it put a lot of unnecessary pressure on both of them both volunteers from THE MANAGEMENT
It makes sense to try and 'warn' any other destination in future
Although the downside to a chain is if they pass "information" on, it's much less risk to an establishment that might depend on x hundred cyclists arriving if only 20 arrive because of bad weather.
I've only ridden a couple, but one of the attractions of the Arrow is to see everyone at the finish instead of the start as per every other Calender event.