I'll bite. The benchmark is actually pretty good. It shows in an extremely comprehensible way how far LLMs have come. Someone not in the know has a hard time understanding what 65.4% means on "Terminal-Bench 2.0". Comparing some crappy pelicans on bicycles is a lot easier.

it ceases to be a useful benchmark of general ability when you post it publicly for them to train against

the field is advancing so fast it's hard to do real science as their will be a new SOTA by the time you're ready to publish results. i think this is a combination of that and people having a laugh.

Would you mind sharing which benchmarks you think are useful measures for multimodal reasoning?

A benchmark only tests what the benchmark is doing, the goal is to make that task correlate with actually valuable things. Graphic benchmarks is a good example, extremely hard to know what you will get in a game by looking at 3D Mark scores, it varies by a lot. Making a SVG of a single thing doesn’t help much unless that applies to all SVG tasks.