British and US ships being harbored by the Greek host of the operation is a direct counter action to the Houthi efforts to pressure Israel to permanent ceasefire via pressuring its allies with economic repercussions.
As for the sole ship pointed in this article, it is not a Russian ship per the article. It is a Marshall Islands owned ship, under Liberian flag, operating by and for the profit of a Greek company, carrying Russian oil to China.
The only negative effect this has for the Houthi/Iran side is that their allies’ commerce has also been disrupted. It is not even a negative effect if you count the pressure this applies on their allies Russia and China to separate their commerce from Greek companies.
Politics is nuanced, this pressure can also backfire, but I seriously doubt either Russia or China would lessen ties over a changeable middleman. On the other hand, Greek companies will feel more pressure from the loss of cut from the Asian trade pie more, and will pressure their government to lessen their involvement in backing Israel in this matter.
Is it toasted, tho?