I'd probably spoof if I could be bothered to get into raids that actually had other people in them, but I was paranoid enough logging into my account when travelling to the US legitimately. The only raid groups traffic here is when a new Pokemon appears. Multi account spoofers that empty a gym at 0200 with their other team accounts just to fill them with their 6 Pokemon even if you're in the same team as them are a little frustrating. That's just mean spirited, but in the end we're just fighting over a few Pokecoins.