Earlier than that, they were actively dangerous. I spent a lot of my childhood in Belltown, and it was not a safe place in the late 80s and early 90s.
SLU and Denny Triangle are amazing now. Those are some of the few places with restaurants open into the evenings. Amazon, like them or not, does a great job prioritizing local businesses in the retail spaces in their buildings. They can't all survive, but they've had a good track record.