Question about spoofing...

I have one phone one account lvl 40 and that is fun enough for me. Spoofers and multi-accounter's ruin the game IMO.

Niantic is pretty much unable to detect multi-account/device holders and it is a problem. If everyone had 2 red accounts only 3 people could be in one red gym at a time. And those with 2 opposing team/accounts can shave gyms; that is attack a red gym with their yellow account to kick one pokemon out then put one of their red account mons in.

My real life is too much fun to waste time and money cheating at PoGo.

Whilst I don't condone it one bit, I guess there will always be spoofers, some who are too lazy to get out there & some who live in remote places where it is impossible to play the game as Niantic wants. It's no fun waiting around for others who may or may not help you in a raid or seeing your Pokémon sitting on your one gym for days/weeks while you receive no coins. City dwellers are the first to call out people for doing things against the TOS to play this game but some don't really have a choice if they want to carry on playing. Some YouTubers are still making videos on spoofing so if they aren't getting banned then that in itself is a green light for some. Multi accounting in these areas is pretty much standard & I don't blame them. What people have to remember is that not all places in the world are Pokémon Go friendly & is it fair to exclude trainers based on where they live?

You can report spoofers in your area so Niantic are aware.

What you may do next time: install a free screen recorder on your phone (AZscreen recorder or similar), record the raid/gym being attacked and switch to your phone camera showing that there's nobody in the surrounding. You may also screenshot the names in the gym once they finished taking it.

Then, go to the game settings> report critical issue > someone is cheating > I'm at this gym and nobody is around. Describe the situation, attach the video and screenshots. They only take one report per cheater, so you may have to create one report per spoofer.

Niantic won't cancel their accounts immediately, but they will flag them. If they recur the infraction their accounts will be banned temporary first and permanently eventually if they didn't stop spoofing. Good luck with that.

Theres really nothing that can be done to disincentive spoofing and multi accounting short of if 2 accounts are close together for a very long time, like multiple hours, you cant raid/trade or such, but even then not every person who alt accounts and spoofs has both accounts on 24/7. If something's added to the game, by nature having more of it will incentivize playing more. The only thing I think could disincentivise it aside from CD's/Raid days where using 2 phones actually makes you catch a lot less pokemon.

Theres not really anything that can be done.

Multi-accounting isn't just people with multiple accounts under different teams (mystic, valor, etc) who use them for raids and shaving gym spaces for themselves.

Where I work, many of the group of people that I raid with bring multiple devices to raids. However, when they use "extra" accounts, most of them are of people in our group that couldn't make it to the raid but trust the other person with their account info. Others use accounts of young relatives that are happy to see new pokemon in their collection when they log in intermittently.

Unless you don't think someone should be allowed to play for someone else's account, I don't see anything being done about this.