Eritrea's tax on expatriates

Eritrea charges a tax on expatriates, and some of the income is currently being used to fund Eritrea's war with Tigray. Does that make the tax a bad thing?

We don't have enough information about that war to formulate an opinion about which sides are right or wrong. So we can't conclude that we should use economic sanctions on that very poor country to make it drop out of that war.

But there are worse things about Eritrea that we do know. For instance, conscripting just about all adults into slave labor. That is why so many Eritreans flee and seek asylum in other countries, no matter how big the obstacles.

Perhaps that is a good reason to stop Eritrea from collecting the tax on expats.