Nothing to do with an anti GP , I actually really like the car now. However, if i were lucky enough to own one, i wouldnt want a company doing R&D work on it, experimenting on the engine management software, for the offer of a discount.
I think the offer is derisable, and insulting. The cost of a GP is £22k, if you can get one. It comes with a warranty. such 'experimentation' would at least invalidate said warranty, and possibly much more.
I'd be looking for a couple of grand before letting a company experiment on my car, personally.