Ukraine

They're going after the thousands of shell companies they're using to get around prior sanctions

Not this specific link/story, but some of the recent sanctions specifically target things Russia has been doing to get around prior sanctions. Such as sanctioning specific dark fleet vessels, sanctioning new entities that have been created to evade prior sanctions, and putting pressure/restrictions on banks to not just rubber stamp transfers to obvious shell companies.

I've read multiple times that this is the strategy on purpose. Somehow it is deemed to be more impactful to deliver the sanctions step by step and also keep some ammo to be able to react to the worst crimes. I don't necessarily agree with that but my understanding of these matters is also limited.

Not even close. They still get machine tools and maintenance services for them from the West, as of list I checked. Y'know, so they can keep making missiles.

I'm not seeing any mentions of new sanctions at the link. It talks about a crypto network having been disrupted.