Edit: well, that seems comprehensively debunked
I mean, you get free press (Metropol, elsewhere known as Metro, which IIRC is swedish) at metro stations, it would make more sense to tax _that_ if you really wanted to clamp independent media.
Also, many people with a smartphone aged 25+ have a company-payed one, so the tax is irrelevant to them. (source: anecdotal evidence as someone living in hungary)
What if the tax is just a trojan horse? If it's introduced, the government will have to install "smart meters" somewhere, checking who consumed what in order to reconcile it with the amount of paid tax. The move from "smart meters" to "total eavesdropping capability" is then just a firmware update away.
If you really think the political news/anything ratio is higher in the average megabyte of internet download than in Metro I am afraid you live in a very unusual bubble.
Purchase a modern AAA game on steam, they're around 30G. Instant 15e additional tax when downloading it. And that tax gets paid every time you redownload anything.
Also netflix becomes a lot more expensive. 50 cents per hour for standard definition or 1.5 euros per hour in HD.
Sorry, but lest this is marked as "informative" by anyone due to it coming from a native Hungarian, I'd like to say (as a neighborhood) that this "it's a distraction" sounds like the usual ideas of how goverment works put forward by some blogs, columnists, that are not really grounded in reality.
It's not like Hungary only does "business with the Russians" for the very short term that this will be in the news, for it being a "distraction" to be effective.
It's also not like there would be any popular backslash on "doing business with the Russians" at this particular time either, so that they would need a distraction.
It's more likely that they just wanted an extra tax and some extra dough coming their way, and came up with this, sans distraction nonsense.