You might be interested to know that Buzzfeed seems to be doing investigative reporting now
I'm going to assume your comment was sarcastic unless there is some proof to the contrary.
Some samples:
Oh, boy.
34 of the best products from shark tank.
23 texts that will make you laugh way harder than they should.
How much do you actually know about drugs?
Find awesome gifts for friends and family.
27 Ingenious Hacks Every College Student Needs To Know (food, laundry and pooping).
Any of those links qualify as investigative reporting?
e: I don't recall any of their articles specifically, but I do recall reading a few solid articles via Instapaper and then being surprised to see that they were from BuzzFeed.
You've got to dig for the good stuff, but it actually is there.