Money has been sucked out of broadcast and printed media as ads have migrated online. It costs real money to support investigative journalism. Fewer ads = fewer dollars = lower quality.
I can definitely see that being a factor, but to my eye the NYT in particular seems worse, and I think I’ve heard they made tons of money during the last few years. You definitely do see some great pieces that couldn’t be done without the resources of an institution like the Times, but it seems to be surrounded by a lot of schlock.