The AI community is worse than JavaScript for acting like everything needs to be thrown out every six months.

Aside from the very important fact that GPT-3.5 is still far and away the most frequently used LLM model, it's not like GPT-4 has a completely different architecture with completely different characteristics. It's clearly better, but much of what they describe should generalize to LLMs as a whole (for example, knowledge cutoff dates matter a lot and these things likely have memorized a lot more than we thought they did).

It doesn’t matter what is the most commonly used model. If you want to make claims about LLM capabilities you better be using the best model available.