It is a typical government propaganda to deflect the responsibility for its actions.
1. Tigray is under state of emergency imposed by Ethiopia
2. Banks closed
3. No electricity
4. No internet
5. No international media coverage. Reuters got its license revoked. BBC and DW received warnings.
Knowing how brutal Ethiopian authorities are, no wonder there is a blockade.
Look at TPLF leaders and their media. They use internet and electricity at will.