I've heard people say it, speaking like this: "This would be a great solution to the problem, except that it would break the admin dashboard. And billing. And SSO. And partner test environments. And. And. And. And. And. This would break so many things I'm sure I could only name half of them if I tried."
Agreed--it seems likely that the user was writing dialogue, taking minutes, or something similar.
Skilled speakers frequently use repetitions of a word (like 'and') as an interjection[0]. It's a handy way of giving yourself a second to think without saying 'uhh' or 'umm' (which, for whatever reason, are considered 'bad' interjections), and seems to be a kind of defense against being interrupted.
