You don't even have to set up a Twitter account under your own name and it takes two minutes to set up a "valid" Gmail account under a pseudonym in order to be able to register.
Also, personally, I think it's an absurd idea to give funds to clubs based on Twitter followers due to this massive loophole: You can "buy" a 1000 followers for around £30.
I don't know what the deal is with funding in this regard but even if the RFL only give clubs, say, £500 for every 10,000 Twitter followers, it makes a mockery of it all if you're able to purchase 10000 followers for £300. Every £300 you spend, you'd get £500 back. Ker-ching!
The RFL can't even perform basic due diligence, how the hell are they going to monitor and measure individual clubs' social media operations?