I reacted to the headline too...but, after a cup of covfefe, I read the article and it's not saying TD.win is the cybercriminal forum. Raidforums is.

The data was allegedly purchased by someone on the website the "thedonald[.]win" and then posted for anyone to access on Raidforums, which Digital Shadows described as a popular cybercriminal forum.

Article goes on to say...

It is lawful to purchase voter data.

I think the point of the article is that, while it was legal to obtain the WI (and PA) registered voter lists, sharing the personal voter info which includes name, addresses, and DOB, on the internet puts voters on the list at risk.

“The leaked information has the potential to enable threat actors to launch malicious campaigns, including spearphishing or other types of social engineering attacks, spread disinformation to influence future elections, or create the appearance of voter fraud,”

And...

be used by criminals to personalize phishing emails or for stalking and harassment.

So, while we have a noble purpose for the data, the file, unintentionally I'm sure, ended up on a site with mal-intentioned folks.

ADDENDUM: Faux News is definitely trying to smear TD.win with their headline. I wouldn't be surprised if it's because we're crashing their ratings after their betrayal.