One year ago it was still the standard and I think most production workload still are using actix (we are). When you dig into actix you feel the pre-async decisions (acceptor threads, worker threads, futures not send).

But for a lot of usecases this model is faster than Axum work stealing. I am not a super huge fan of hyper (on which Axum is based), I salute the work (it is impressive) but it is very clunky to use, the code is hard to read and usage is super opiniated.