@ServiusTheBear Absolutely, there needs to be a great deal more testing, in Legend(s?) of Pegasus's case had more testing been done, Novacore might have avoided falling apart (maybe not, given how quickly they folded post-release).
Obviously I cannot speak from a modder's or devs' perspective, but from a consumer/gamer's point of view I can understand a certain impulse to have one's cake and eat it too (have an early release beta and trainers). However, I think that is unrealistic, and while I truly appreciate the trainers for games such as Stardrive, Kenshi, etc., I can't fairly expect them to be updated as regularly as the games themselves. So while I hope betas are still sometimes given trainers, I very much agree with your line of thinking that they are generally at present far too unstable to warrant regularly updated trainers/mods.
Still, I think a distinction ought to be made between inexperienced but enthusiastic/dedicated developers, and those that "suck." We need to be honest here, the site is called CheatHappens. Game devs are not beholden to the CHT or anyone but their own customer base, and if someone never uses cheats or trainers for their games, regular and significant updates are a good thing. At the same time, if a game releases with some game breaking bugs/glitches, and (like with Dragon Commander) the fixes only make more problems, then clearly the game was released too soon.
I guess what I'm getting at is that we're lucky a site like CheatHappens exists and is operated as efficiently as it is. That being the case, while it will obviously be frustrating dealing with constantly altered games, I very highly doubt that many games are developed with the gamer who plans to exploit and cheat their way through it in mind. I think it is (in certain cases) unfair to negatively label a number of devs because their efforts to improve and fix their game inconveniences the people who want 1000000 million gold, invulnerability, and a rocket-arm right off the start.
All that being said, you've made a good point. I think the possibly soon-to-be released beta of Starbound will be a good example of what you're talking about. I've followed the development of that game quite closely, and while the dev team seems quite dedicated to bug squashing and their game and community, it is abundantly clear that Chucklefish Games lacks the kind of more rigid structure necessary to produce a product that is more ironed out straight out of the gate. I'm really excited for the game, hope it does well, and hope there are trainers/mods for it here, but I could definitely see it falling victim to the problems you've outlined. However, even if that is the case, I still wouldn't say that Chucklefish sucks.