OK, I thought it was very stupid of them to go after XenForo. Not just because I believe they're wrong, but the long term public relations damage alone they'll have to dig themselves out of... Assuming so if they can even make out. Nothing hurts a company more than bad press and bad word of mouth.
But whoever is running the show over there.... Clearly is missing a few screws if they really think they have any grounds to take on Google.
They're going to get crushed under the sure weight of that company, never mind the bad press or poor word of mouth.