[Illniyar]

Your government has capital controls (mentioned in a different response) to prevent you from purchasing foreign currency.

Which makes buying crypto (or stablecoin) illegal online purchase.

Illegal doesn't always means wrong or immoral, depends on whether the laws are good or not.

[maxilevi]

It's illegal to buy dollars.

I am buying an asset that is pegged to the USD dollar. That is not illegal neither is buying USD denominated bonds. In fact the goverment even has sold USD denominated bonds.