Re: The best response to this
I suspect that won't work - your free license will be required to having slurping enabled. Which makes it pointless getting it if you aren't prepared to let those tools near your code.
I can't see why anyone would, unless they're a hobbyist playing around with code that's public domain anyway (or a fully open source developer - same, JetBrains can already access their code). If you have proprietary code you've presumably kept it proprietary for a reason - the last thing you want is an AI used by other developers trained to reproduce your code! And if you ever access anyone else's code under NDA or license restrictions (which, lets face it, affects most closed source developers) then you legally can't sign up to this without the agreement of those 3rd parties...