Comment by posharma

Disclaimer: these are anecdotal reports. I've heard from a lot of my friends how abysmal the quality of code is at Meta. Obviously, this may not be true in all teams/products, but that's the general sentiment. Why make it faster when you're already dealing with mess! This is abundantly evident from the constant fire fighting, duct tapes and a metric driven culture that incentivizes the number of diffs landed.