The article is titled "Iran says tankers seized because Greece 'stole' oil" for a reason. Clearly I'm not being absurd here. The article does talk about Greece stealing the oil. It doesn't have to be news agency's own verdict to use that as a statement. You're free to challenge its accuracy, however, it is absurd to say it's not founded in the article. Persian Gulf turning a dangerous place is a point of opinion. Given Greece confiscating a tanker carrying Iranian oil for whatever reason did put Greek vessels passing near Iran a target which is precisely what happened. Again, you're free to disagree with that and say that Greece is not at fault for this but that doesn't mean one can not argue that given what the information provided by the article.
You didn't refer to any other articles as well. Making sweeping generalizations doesn't really create a valid point. Just because you assume something to be doesn't make it to be. Just for reference though, Turkey scored an abysmal 41.25 in the Reporters Without Borders press freedom index with Greece scoring 55.52. Turkey having a low score doesn't really grant you the right to assume foul play freely at every turn.