Some context for those wondering: Those are reserved aliases for google. If you send a mail go abuse@company.com and they use google, that mail will be receiced by google (and the company if they have that set up). It's intended for reporting spam sent out by company.com email addresses.
Not entirely sure how it works, but I assume sending newsletters to that causes some automatic sanctions for the company that are a massive headache to resolve.
No, abuse@ is not some sort of Google invention but to the best of my knowledge was an informal convention that then got formalised in RFC 2142 [1] in 1997 along with many other common mailbox names. If Google sets this up automagically for their users it is great, but they are merely continuing this long tradition.
Not entirely sure how it works, but I assume sending newsletters to that causes some automatic sanctions for the company that are a massive headache to resolve.