Cool space news: both the Tianwen-1 and Hope missions have successfully entered Mars orbit, adding two more countries' names to 'sent something to Mars'.

Good!

Six space agencies (well, seven if the USSR and Russia are counted separately) have successfully had some sort of Mars robot: the US, the EU, the USSR/Russia, India, the UAE and China. (Japan has had success at Venus, but not yet at Mars, so they'd be added to an interplanetary list.)

Yep. Tianwen's got a lander, but they are doing the 'orbit first, then land' thing. China's had good luck with landing robots on the Moon, but Mars has just enough atmosphere to be a pain in the ass, but not quite enough to be useful.

I still don't understand why we're doing quite so much with Mars and not enough with the Moon, but awesome

I'd guess because the people who would be focusing on the moon would be more in the human spaceflight part of NASA, while the robots are mostly run by scientists who find Mars more interesting. That and a lot of Moon stuff can be done by small cheap dedicated missions rather than a big flagship like Perserverence.

(We also still have the LRO mission orbiting the Moon, which... my god that was launched in 2009 and still able to work.)

11 years and counting, that's a nice operational lifespan