I couldn't agree more! If you want a device that'll last, it'll cost you. I only use Evolv and Yihi devices because I don't have to be worry about them failing. I compare my dna devices to my Klein side cutters, sure they cost 3x times as much but they'll last much longer, work 10x better and if something does go wrong you know the manufacturer will replace/fix it.
Even those can fail. Evolv is pretty good about honoring their warranty and all, but it's not a lifetime warranty. YiHi's only for 3 months. Any electronic device can fail. All my DNA mods are used for TC. All my cheaper mods like an Alien and AL85 are wattage only. All are working fine, not even a problem with the finish on my Alien.
Would I rely on an Alien as my primary/only mod? No. Does it work in my particular rotation pattern? Yes. That is not to say I believe you should only get 6 months out of a mod, but there will be early and late failures on any mod.