I run an online psychohterapy practice and I know there are 1000s others who do the same, and on Tueday will be cut off without warning if this rolls out then without warning.
This means that users know it will always work the same way regardless of which room they walk into, minimizing user error very important when you think about meeting rooms that are shared among many different employees and their varying technical levels.
Users are not required to configure the app settings to enjoy the time limit uplift from Zoom.
If one student leaves and then an educator has to wait for the next student's meeting for 40 minutes, a timeout may occur - forcing the teacher to restart the meeting and resend invites to students.