Pros
They are technically a workplace and pay you money. It's likely you won't be employed full-time so you can leave relatively easily when the mental health cost becomes too much
Cons
Typical alpha male clueless startup bro management with no idea how to employ people or run a legitimate business. Constant surveillance of workers and emails sent by management suggesting workers are being watched via webcam. Absolutely no support offered for huge amounts of stress and mental exhaustion caused by work. HR policy is created on the fly and utterly disregarded by management. Complete lack of respect for everyone but sales staff, who are in on the very shady work that the company actually does and get a large cut of the profits. Utterly toxic workplace culture that ignored a great deal of sexist, racist and generally offensive behaviour that would get people fired anywhere else. Ridiculous workload demands. Every so often staff are forced to market and promote management's crackpot startup ideas that fail after a few months, which means that workers are working for multiple companies (with multiple workloads) simultaneously with no additional pay. Non-sales workers told that their jobs are worthless and they're replaceable. Revolving door of managerial staff who are paid a great deal of money to repeat slogans out of entry-level How To Run A Business books and then fired when this somehow doesn't solve all the company's problems. Illegitimate SEO practices constantly undertaken by the business and employees constantly take the fall for when they don't work. Company does not care about financial or life situations of customers when it comes to issuing refunds after their work is inevitably found to be terrible. Company constantly rebrands to avoid negative PR, adding yet more stress