Permission "Prevent phone from sleeping"?

[noloader]

Hi Everyone,

I'm interested in installing Weather Widget using F-Droid. According to F-Droid download for Weather Widget:

Permissions
- have full network access
Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
- prevent phone from sleeping
Allows the app to prevent the phone from going to sleep.

I understand the need for the "network access" permission. I don't understand the need for "prevent phone from sleeping" permission.

Additionally, Privacy.md seems to indicate "prevent phone from sleeping" should not be present:

... the developer doesn't collection any form of information personally when the software is utilized and the software doesn't require any permission either. It is a simple widget software...

I guess my question is, should "prevent phone from sleeping" be present in the app's manifest? Or does the permission serve a legitimate operational purpose?