Yup. Same here. I'm the "new guy" on the team, and I've been here for over 13 years. Everyone knows how to do the job, and they know what is expected.
They just do it.
mainly because the WFH means your available 24/7 ... which is the only thing that is a downside. We all work like 6am to 8+pm all week.
We are all encouraged to unplug at the end of the day--though some circumstances obviously come up to prevent it. I put in my 8-9 hours, and I'm done.
My two coworkers and I live on the East Coast and we have to support Europe and Australia customers in the SAP Environment so we need to be available as much as possible which is why we all have long work days.