Thank you, came to say something similar. This is basically Machiavellian corporate politics, by someone clearly bitter at the way the system works.
The bit I found useful in there is the idea that the people who don't care about quality still might care about promotion - for some people it's just a job, and for others skipping on quality is a way to be seen to produce a lot of quantity. It's easy to see how 1000 lines per day is probably going to get you promoted in a hurry, regardless of whether there are twice as many bugs in that code than the average of the code base and twice as much code as there needs to be. Those multipliers make a massive difference in the long run, but are probably too small to detect in individual commits.
The bit I found useful in there is the idea that the people who don't care about quality still might care about promotion - for some people it's just a job, and for others skipping on quality is a way to be seen to produce a lot of quantity. It's easy to see how 1000 lines per day is probably going to get you promoted in a hurry, regardless of whether there are twice as many bugs in that code than the average of the code base and twice as much code as there needs to be. Those multipliers make a massive difference in the long run, but are probably too small to detect in individual commits.