>How can someone tell me what I will find beautiful or intuitive?
Nobody can. But when a press release says a product is beautiful and intuitive, it at least invites you to go use the product and judge for yourself.
>It's buzzwords, not a meaningful reflection on the changes.
Beautiful, fresh, and intuitive aren't buzzwords in the same sense that synergistic, disruptive, etc. are. Beauty, freshness, and intuition are ancient aesthetic concepts that speak to instincts in, dare I say, all humans. When I hear that something is beautiful, that is an invitation for me to go judge said thing's beauty. As such, I'd argue that describing a new product as beautiful, intuitive, or something similar is an equally meaningful description as listing technical specs driving a change.
>People that aren't professional writers think that stringing positive-sounding words together in a way that is grammatically correct will result in a good sentence. The result is corporate speak.
As someone who has written copy professionally (and still sometimes does) I disagree with you on a number of levels. Strings of positive-sounding but effectively meaningless words absolutely are effective for selling and persuading. On the other hand strings of meaningful and unambiguous words often don't convert. Note that we don't sell consumer products by using instruction manuals as ads, and we don't drive massive traffic by describing the mechanics behind a site.
Even Rails, a technical "product", advertises itself by claiming to facilitate the writing of "beautiful" code.