Yes and no. As with most things, it’s more complicated than that. While it’s true that not many philosophers would claim to be “pure” nihilists, instead opting to qualify their position, there are nihilists who do have a very doomer outlook so to speak.

This is why in the article you linked, nihilism is qualified as “optimistic”. This kind of nihilism is often associated with Nietzsche and later as your article mentioned, Sartre. Though I’m not sure Sartre would say he was a nihilist; Sartre was a huge figure for the existentialists. However, the two movements have a lot in common and one could argue that optimistic nihilism and existentialism are close enough to be considered the same thing. I am aware of some scholars who consider, for example, Nietzsche to be an early existentialist. It must be noted, however, that the optimistic qualification is of utmost importance. Nihilism says flatly that there is no meaning, existentialism says that we are able to decide what is meaningful.

Anyway, this is all to say that Nihilism (with a capital N) is a pretty pessimistic and “doomer” idea to have. Nietzsche himself argued that the solution to nihilism was to destroy all interpretations of the world so that we can start from zero and hopefully realize some actual meaning. Perhaps my understanding of doomer is wrong, but from where I’m standing, nihilism and doomerism are pretty much the same thing. Different flavours of nihilism will produce different conclusions about this connection.

“He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you.”

-Nietzsche

I think everyone should probably read The Second Amendment: A Biography by Michael Waldman

A cropped version of this photo is in the article

Yeah I regrettably* bought a year’s subscription to Peacock and was also pleasantly surprised that my PiHole just blocked all the ads.

*This was when they were offering a year for 20 USD. They had advertised world cup streaming but neglected to mention that all the commentary was in Spanish with no English option. I ended up just streaming a Swiss TV channel because it was at least in a language I can understand.