Exactly. Your employer is not going to enforce boundaries to ensure healthy work/life balance for you, you must do it yourself (until labor regulations catch up; see France [1] and NYC [2] labor law regarding checking email outside of work hours for examples).

[1] https://newatlas.com/right-to-disconnect-after-hours-work-em...

[2] https://legistar.council.nyc.gov/LegislationDetail.aspx?ID=3...