No benchmark is perfect, but these ones cover such a wide variety of different languages and frameworks, it's a good resource for getting a rough idea of the kind of performance that a given stack is capable of.
I don't know much about TechEmpower the company, it seems to be a small consultancy, maintaining this project probably takes non insignificant resources from them.
The end of the project seems kind of unceremonious, but they don't owe anything to anyone.
Hopefully an active fork emerges.
I think the biggest problem was it just had too many entries, most of which seem tuned to cheating benchmarks. Would probably be more valuable just choosing the top 3 by popularity from the top 15 languages or so.