I have had 2 Vortex Venoms and 1 Vortex Viper fail in over ~50K rounds and 1 year. Vortex was great, they sent me replacements in aprox. 1 week from receiving my broken one each time, no questions asked. They were fast, professional, kept in touch, and sent me some goodies with the brand new boxed replacement sights. I was impressed with their service. Stuff happens, these sights are made to a price and they get slammed around a lot during firing. I had a spare so it was no big deal as they all broke while practicing. I carry a spare just in case but this year no fails so far although C-19 has slowed the # of rounds fired down a bit.
Sure, they should never break but if you use your stuff like most of us do, this is not unexpected. For the price I paid for the sights I have no problem with them. This year has been flawless so maybe it was a bad batch..who knows.