There are plenty of ways to multi threaded code these days. From actors to coroutines on the programmatic interface level to using green threads directly in go

There are plenty of ways to multi threaded code these days. From actors to coroutines on the programmatic interface level to using green threads directly in go or Java. There is very little reason to resort using locks, mutexes, or semaphores outside of frameworks designed to make multi threading easier or very specific high performance code. (Where in the latter case it could be argued that multi threaded probably adds unreasonable latency and context switching.)