Limited support for AirTags has been added to Android, that is the context of the posted article and the experience you are describing.
Apple neither supports account access on Android devices or provisions access to their tag network on behalf of linked accounts, so unless you have an Apple device, you cannot stipulate that a tag that belongs to you.
Consequently, the solution offered by Google appears to have been effectively built without Apple’s support. Goggle’s added support for AirTags despite Apple’s cooperation—and support for other tracking devices—is a net positive for privacy.
Allow me to clarify:
Consequently, the solution offered by Google appears to have been effectively built without Apple’s support. Goggle’s added support for AirTags despite Apple’s cooperation—and support for other tracking devices—is a net positive for privacy.