My display unit is currently on RMA which is time consuming and costly to ship.
I don't know what the industry failure rate for PC monitors are, but 5% seems high from
this list. Failure rate that are considered reliable hover around 2%, venturing towards 5% and beyond is considered high rate.
Every product will have their lemon/duds, usually only people that have issues voice their concerns, but it is the number/rate of those negative remarks that matter in comparison to other similar products. I do see anecdotally ROG swift line having more issues than other brands like Dell etc. Reading around people/articles quoting poor QC issues.
If an issue is known & a way to mitigate or prolong it's lifespan by doing some kind of precautionary steps I would like to know. Like if the unit has heat issue and leaving it overclocked increase it's chance of board failure. Maybe leaving g-sync always ON puts less strain than toggling ON/OFF when alt-tabbing between desktop & fullscreen games, much like how a light bulb last longer staying constantly on than turning on/off repeatedly.