Version tag v1.0 is older but higher than any of the other newer tags

[Vinai]

The last commit in tag 0.1.0 is 2e846ae from 14 Jun 2021
The last commit in tag 0.1.1 is 2e846ae from 14 Jun 2021
The last commit in tag 0.1.2 is 4ed9b65 on 25 Jun 2021
The last commit in tag v1.0 is 5d75c24 from 13. May 2021

Was tag v1.0 added by accident?
Since composer recognizes is as a stable version and it is considered a higher version than any of the others, maybe it should be removed?
If not, can someone give some insight?