You may still find other teams in the world that you can dupe, but in the end, I expect lies to hurt your overall prospects (in life as well as work.)
What you're saying contradicts the common advice to oversell yourself (AKA "fake it til you make it").
But there's an easy check, should they care to do it: call their current manager.
If I thought the employee was worth the extra money they were asking for, I'd give it to them. If not, I'd let them walk. Whether their current job is considering matching their offer doesn't really matter to me.
If a candidate asks for a specific salary, I don't care why they want it. I only care whether I think they are worth it, and whether I can afford it.
If so, you're not talking to your recruiters. You should find out more about what your side of this negotiation looks like to a candidate.
Do you seriously think your team is made of 100% people who only ever tell the truth?
Let's get realistic, we all tell lies here and there. What matters is what you lie about and why you do it.
I couldn't care less if a developer joins my team and lied to get a higher compensation. All I care about is whether they are a good hire and if they'll do good work.