this shows that bitcoin is being en-grained into the fabric of our society when the tax collector has added bitcoins as a means of tax payment. It means that they would have done their continuity studies to ensure that this is a sustainable , viable method of collecting taxes. This says a lot about bitcoins and its future in society, its obviously on its way to greatness.
Yes you are right for that, but I think this is not for all countries, maybe this kind of thing is only in some countries, because they know that Bitcoin has a very good future and help everyone, so they think for tax collection can also use Bitcoin .