That's an _extremely_ poorly-written article. There's no _threat_ here, it's a warning. Twitter _will_ be subject to the DSA (and the article appears to conflate the existing pact and the DSA; to be clear they are different things).
Nothing the EU threatens Twitter with is worse than what Twitter is already doing to itself, it's like warning someone in the midst of a suicide attempt that if they don't stop, you'll smack them.
Here [1] is an article that backs at least one incidence of your statement. Have ZeroHedge linked to Russian state controlled sites more than once? I ask because it also appears they perturbed folks for reporting on Hunter. The domain is auto-flagged and requires a vouch which I only do if the article is interesting.
I think the most charitable thing that you could say about Zero Hedge is that it's... weirdly credulous of Russian propaganda (which in itself would make it a bad news site; you don't want a news site that'll just reprint any old nonsense it sees on Twitter). However, there may be more to it than that: https://www.newyorker.com/news/benjamin-wallace-wells/is-the... (see the bit about Colin Lokey; the Bloomberg source article goes into more detail but is paywalled).
[1] - https://archive.is/b1358