Pros
The main pro of working at TeePublic is there's truly unlimited PTO. As long as you're meeting your goals and deadlines you can take off a significant amount of time in a year, which is valuable to most. This may be a pro or a con depending on who you are, but there's definitely a focus on creating a fun, fratty, and start up-esque environment, though the company is owned by the publicly traded Redbubble. There are beers in the fridge, many drinking focused happy hours, and the occasional joint being passed around in the office. They aim to hire "nerds" and have a focus on embracing "nerd culture", so much so that they ask in interviews "what makes you nerdy"? and you're asked to provide specific examples.
Cons
There's a heavy workload consistently and little to no payoff for doing that work. You're hired under a general job description, but its consistently changing based on what management deems your priorities should be. They've been consistently called out for promoting people with responsibility before pay or title, and yet do nothing about it to actually make a change on this issue. If you're looking for somewhere to grow with a reward, this isn't the place for you, but if you want to be criticized for doing a job you weren't hired for, you've found the place. Unsurprisingly there's also extremely high turnover between employees being abruptly fired, or leaving abruptly or the large wave of layoffs that abruptly fell just a few months back. Morale is consistently down and the pizza parties they're throwing do nothing to fix it. They're not committed to doing any real work to uplift employees, they just want to smooth things over and say they're doing their part, but will continue to foster an unhealthy hypercritical work environment that places blame on the individual rather than the top down toxicity.