"You don't get if you don't ask"
If it cost you nothing to spin a coin and you may win £x or you may not - then you'd spin wouldn't you ? Hence the need to deter meritless claims.
For employers to 'pay up' rather than properly defend a case simply on the grounds that the legal costs of defence would far exceed any possible penalty is a travesty - and, unfortunately, a common experience.
I have another cliché for you - "put your money where your mouth is".
As one example, we have a (protected characteristic) employee who attributes ANYTHING relating to her employment, or to her work, to the fact that she has that same protected characteristic. She works in a team. We swap duties around within the team from time to time. Everyone else says "ok, no worries" ; she says it's because she is (protected characteristic).
This is what we're up against.