Ya they all generally will fatigue and break after a while and especially if you're use larger sized sockets on them. It just the nature of the beast inherent to the design.
I find the Milwaukee Shockwave socket adapters the best for me. I like the shorter length and really do not cost much more than some others but I have numerous ones of all types of brands, HF, TSC, Ares, Titan, ITT, and some with no names I got from the counter display at the hardware store. Also have up 12" and now some with wobble ends.
I don't expect any of them to last forever under repeated pounding.