plus when you charge people to play your game you should know what your doing.
Looks like some adult gamer never played common games...try some, charged for €50+ from big international companies with hundrets of professional programmers...aside from usual crashes, glitches, bugs and other fun you will find many breaking their savegames with updates, patches and dlc's. Every change to the core codes or engine can break savegames. Any dev with a little brain who stands before a bug that can be fixed will do it...if this breaks the savegames, well, shit happens, better than bugs...especially in early development because they tend to grow into big problems over time.
In this and most other cases here, the games are still in development...a company would never dare to leak such early pre-alphas without most of its planned conent, but we are not talking about companys here, most devs are alone or in a little team of "specialists" (coder, artist, creative, ...) and lack the funds, equipment and PR of a company, so they need money to upgrade their equipment, money to life if they want to spend full time on making the game and people/communities talking about the game to get more customers. Many of the games here are first time projects. Learning by doing only works if the hardware can keep up with it. So its an easy deal, you get early releases to see if the game is worth your money and they can upgrade their skills, equipment, and time for making the game + some devs are even open for suggestions and improvements, what big company did ever listen to that? Little hint: There are millions of unpaid private modders in many modding communities for countless big-company-games all over the internet...not only to get the girls naked or add semi-legal content... ^^