Why does my iPhone show the location icon often?

Hello, i noticed that when i have any apple device nearby that is part of the "find my" network, on my iphone at the top i see the active location icon very often (about once every 30 seconds). if i have no devices nearby this problem does not occur. i would add that the services that use the location are the "find my" and "networks and wireless". is it a problem? it's annoying to see the location icon flashing

[Re-Titled by Moderator]