Sometimes it's easier to follow a link, have a look, and then go back without jumping around tabs.
Default, on the same tab (since browsers have options around this), but allow users to select if they want it on a new tab/window.
Kind of like a subset of what appears here but of course concentrated on blogs not other sources of news.
Looking at other comments some people are definitely going to prefer each link to open in its own tab.
One thing I see is because so many blogs are no different than a dead website for anybody using full security and privacy on their browser.
You wouldn't want your main page to turn into a dud every time somebody clicked on one of these dud blogs which are randomly scattered among the good links.
OTOH if you curated the blogs which are universal good links separately from the ones requiring the least bit of friction or compromise to security or privacy, that would be something I haven't seen anyone else do.
And it's needed now more than ever, plus the need's only going to increase.