Has anyone considered using this unique anomaly as an illustration? Which of these domains would you choose to register even for a fee? While I do have my suspicions about what kind of business this pertains to, I won't discuss it openly.

Why avoid discussing openly? In my opinion, it's just a risky startup. To put it into perspective, they have 350,000 domains, which amounts to roughly $3.5 million annually - not exactly a huge sum of money for major investors.

Perhaps there were some lucrative sales that help sustain this vast amount of domains, especially given the presence of expensive keywords. As for their starting price of $500, in my view, it's simply a generic combination of dictionary words or trends on Google, but it is plausible that these domains are also being sold. If not, they may just expire in two to three years.

And what is wrong? All names look absolutely normal and varied. There is no one undesirable direction in them. What suspicions can there be - just a kind of domain business. The annual maintenance of such domains can reach up to $30k, so the "payback" should be present.

I agree, most of these domains I would not charge for the price of registration.
There are some that can sell for up to $200. But they are few. Yes, the domain business is very muddy. It seems to be only beneficial for domain registrars.