That wasn't criticism. You should look up what that word means. Just saying... Not saying your right or wrong about your preference. Personally I prefer RPGM over Renpy but to each his own. RPGM itself does not create buggy gameplay, though the engine does crash a lot for some people. I've seen many Renpy games that are buggy and have game stopping bugs. (Usually those that aren't VN only or the devs green to the programming).
Renpy is much easier to program in, if you come from a programming background, but if not then RPGM might be easier for you as it is a GUI interface and it does the programming side. That one reason why some devs prefer RPGM over Renpy from their side of things. Also the atmosphere the engines create are different and the dev likes the RPGM feel more..
I haven't encountered any game stopping bugs in Cybersalyers myself, but then I haven't played all the way to the end of its content either. Been kinda busy with other things
