I think a lot of people viewed Twitter as poorly-monetized and -managed as product and business, but generally competitive as a technical organization.
Over the years in various hiring threads it's been common to describe Twitter as the giant tech comapny you go to when you can't get hired anywhere else. Twitter has definitely had a reputation for a long time for being bloated and filled with less-than-competent employees. It's only earlier this year that I've seen the discussion shift towards this idea of Twitter being a competent group.