'So-called?' Is BBC News confused about the Islamic State?

So-called news outlet.

— scottsswingset (@scottsswingset) November 29, 2016

As Twitchy told you, the Islamic State has reportedly claimed responsibility for yesterday’s “car-and-knife attack” at Ohio State University. BBC News is covering the story as well — in their own special way:

So-called Islamic State says it's behind car and knife rampage at Ohio campus on Monday https://t.co/h5Xjy9oehS pic.twitter.com/j9jhzEh3U9

— BBC Breaking News (@BBCBreaking) November 29, 2016

Come again, BBC News?

So-called? https://t.co/PHCaMgBCNQ

— Dana Perino (@DanaPerino) November 29, 2016

Perino’s not the only one struck by that phrasing:

"so-called" ?

— Michael (@Davoli) November 29, 2016

https://twitter.com/jgriffithk/status/803696231792996353

"So-Called"?? You guys are nuts!!

— Trying2HaveFun (@Trump_Wins16) November 29, 2016

it's "Islamic State" and not "so called" When will u guys stop living in denial!

— FESTUS OJEKHEKPEN (@FESTEAGER) November 29, 2016

It ain't no so-called, it is ISIS. Deal with it.

— Peter Smit Gary (@PeterSmitGary) November 29, 2016

can we call you guys 'so called news outlet'???!!! #fakemedia

— Garrus Vakarian (@GVakarian11) November 29, 2016

So-called news organization clearly behind whitewashing of news involving definitively-named Islamic State.

— Rusty Weiss ?? (@rustyweiss74) November 29, 2016

On the other hand:

I believe it is in order to deny them self-claiming they are an actual state.

— JP (@5Mumsie) November 29, 2016

calling them 'So called' ridicules/insults their name/organisation so I feel its right to call them that think of it that way

— JULIE (@RDWimp) November 29, 2016

What say you? Do you think BBC News’ intent was to delegitimize the Islamic State?