They run it like a startup and gamble with people's jobs. If they're hiring, they are investing long-term and intending to grow. They expect a certain level of attrition to meet financial goals. It's not inherently a bad thing as long as they keep growing, and the turnover rate isn't high, but they are more at the whim of the greater SaaS market than they like to admit and that has already led to a small number of people losing their jobs.
The "act like owners" value is a double edged sword. Each individual gets more freedom of decision and whatnot, but equally there is a lack of direction and you've got to be prepared to take on the task of finding work to do and creating your own work, which is not easy to learn where future plans seem to be in a quantum state of being both designed and set in stone yet also materialising out of nowhere every day. Learning this process is harder than the engineering itself.
They are lax about work from home on paper, but there is definitely pressure to come into work. It's implicit, as the upper management is personally against WFH and they use the "act like owners" core value to push for this. If you're starting out, don't expect to just slide into integrating WFH into your work week. For the first few months, you might find it doesn't happen at all as the onboarding is optimised entirely for working in the office.