Heck, I'd even have my developers write an AI that automatically extracts fair-use-length clips from videos and songs belonging to some of the biggest complainers, and uploads them as "honeypot" videos. If they complain about one of those, ban 'em from complaining again. They don't understand copyright law.
A 10 second clip of a movie isn’t necessarily fair use; It’s decided on a case by case basis. You can use as much as you need to get your point across; No more. If that’s 10 seconds, you can use 10 seconds. If that’s a minute, you can use a minute.
But if Google's lawyers took a stance on this, they could use precedent to set defined rules for what actually counts as fair use and all these claimants would be fucked.