It is unfortunate that so much of the Internet is reveling in The Order's poor showing. Ready at Dawn is comprised of a whole lot of real people, most of them surely very talented, who worked very hard to put out a finished product. Regardless of the quality of that finished product, the work deserves praise, not derision.
Unfortunately, because The Order is exclusive to Sony's platform, many Playstation 4 owners have firmly hitched their wagons to it. Insecurity runs deep in human nature. Insecurity about how you look, about where you live, about what you like and what you purchase. Did you know that most car commercials are not directed at people looking to buy the car, but the people who have already bought it? The idea is that people need reinforcement about their purchase. Seeing a commercial talking about how great your car is eases worry that you may have made the wrong choice. With video game consoles, exclusives play to the same purpose. If you own a PS4 and only a PS4, knowing that you have access to great games that can only be played on your system eases purchasing insecurity. With that in mind, a lot of gamers didn't just want The Order to be good, they needed it to be good. It's what leads to staunch defense of the developers vision and harsh, often irrational, dismissal of any pre-release criticism.
Unsurprisingly, this rubs a lot of people the wrong way. Blind defense of just about anything is annoying, and what leads to a lot of the posts that seem excited and happy to watch The Order fare poorly on Metacritic. The vitriol isn't really being directed toward Ready at Dawn, they're just caught in the crossfire. Rather, the obnoxious celebrations of poor scores are directed at those who blindly declared The Order a triumph before they even played it. It's unfortunate that even those in professional circles are joining in on the derision, but given the chorus of loud, defensive voices before release, it's not all that surprising. Right or wrong, there's catharsis in watching those who have been perceived as irrational face reality.