In my view Teletext has a great property: A single page is short. Thus news articles must be compact and straight to the point. Unlike the text here, which I can fill with fluff, unrelated side remarks and repetition, a teletext author has to find the essence in the news and focus. That makes scanning Teletext news quick while giving a good view on what is "important" (by the standards of that broadcaster)
It is quite different: Having such a limited channel as Teletext one has to be even more selective on the news being reported and then which aspects of it to report.
Over here in Germany I got some TV stations discussing on celebrity news, some station focusing on economy/business news, others on political things, some in sports.
But yeah, USA has this "two sides" issue with a touch of zero sum (it's always either this or that side and either helping one or the other side)
I assure you, Pravda could fit it's biases, lies, propaganda, and omissions in 160 characters. Bullshit has always been easy to shrink.
It is nuance, context, framing, etc that you are eschewing in your mistaken belief of "no bias".
At least that was the state about 10 years ago, maybe they upgraded the infra since then.
The website (https://nos.nl/teletekst/101) and app (https://play.google.com/store/apps/details?id=com.eoffice.an...) are very popular (no ads on either), but so is the website which covers a fraction of a modern browser's screen.
There's something about the short-form just-the-facts writing that makes information and news much easier to read than the puff pieces you find on many websites these days.
It seems like it would be a pretty neat little hobby project to develop a common teletext viewer / aggregator for all of these links people are putting up!
By the way, an interesting book called "La TV da sfogliare. 1984-2024. 40 anni di Televideo" by Guido Barlozzetti came out this year.
It's super interesting (if you speak Italian and) if you're curious about the history of the Italian teletext.
https://rtve.es/television/teletexto
Private channels have teletext pages too.
https://www.teletext.ch/
https://apps.apple.com/ch/app/teletext/id308630240?l=en-GB