They aren't claiming their career decision is a monumental thing for anyone but themselves, but a complete change of career is a monumental moment for the person whose career it is.
If you're suggesting that having a dinner party with friends to mourn/celebrate the change, and writing a blog post about it, is overly "dramatic" then I completely disagree. If, on the other hand, you just mean that some of the minor specifics such as the invite including "Dressing in your personal version of mourning wear, the more over-the-top the better, is highly encouraged but not required." then I think you're just not in sync with her(his?) sense of humour.
If you're suggesting that having a dinner party with friends to mourn/celebrate the change, and writing a blog post about it, is overly "dramatic" then I completely disagree. If, on the other hand, you just mean that some of the minor specifics such as the invite including "Dressing in your personal version of mourning wear, the more over-the-top the better, is highly encouraged but not required." then I think you're just not in sync with her(his?) sense of humour.