The quotes have not been great, but I'm not too concerned with it. It's just a small part of the marketing that likely very few people will ever see once the real ad campaign starts in the lead up to Oct 7th.
That said though I do think the biggest issue with the quotes is that they're trying too hard to encapsulate the characters and why we should like them with these lines, but there's so little context that they often fall flat or appear juvenile. Sure the quotes probably sound good in the context they are taken from and after we get to know the characters and hear the lines spoken they'll fit right in, but as they stand on a screenshot they're not very good. Other games like FFIX and Fallout NV have done something similar and more successfully and I think they did so because the lines they used weren't attempting to convey so much to the reader. They were interesting lines and/or more focused on broader themes and ideas, rather than attempts to convey their personality and get players to like them right off the bat.
I think these would have worked better if they were done in conjunction or after a character video which gave us a better idea of the companions in action, then lifting these lines from the video or new ones so we would have that foreknowledge of them to better interpret these lines.