Pros
If you are starting your career, you need to start somewhere. Maybe that's somewhere like Spreetail (which is also not the name the company has always and continues to DBA, that is actually VM Innovations or VM Express, if you want to find anything online). You may gain some insights as to how different parts of a business can be structured, and how they may operate together; but more so where to learn how not to do things, how to work with or treat others, and use that to your advantage when you decide to or are able to move on elsewhere.
Cons
Most of the red flags and troubles have been covered thoroughly here by others over the past 6-9 months. Whether that's in regard to strategic blunders, financial troubles, or reprehensible business practices or behavior from those [who remain] in leadership. The rating trend line here, nor the feedback from countless individuals who've moved on, or are still trapped there, is real and is impossible to bury or be ignored. If you are a prospective employee (particularly one with a strong professional track record), business partner, supplier, investor or otherwise, this is not a team nor company built for ongoing sustainability or success. The body of evidence you see posted here is not a small group or cross section with an axe to grind, nor associated with one part of the company. It is pervasive, it is the norm, and it will remain toxic as long as the company is constituted and run as it is today.