Wow, you got personal really fast there. I'm glad you understand me well enough to have decided that I'm unable to separate what I want from what I see as a general trend, especially after calling me out on strawmanning. I don't use jump refreshers because I think they're perfect, I use them because I enjoy using them. As you might note, I simply said I hope that Yoberg goes in a direction that is more traditional (in terms of fangames) than copying a flash game in the future, whereas you seem to have read me as demanding that he do so. He should do whatever he enjoys. I was simply stating my reaction to it.
As to your argument: if you examine a few of the most popular fangames (let's just say Boshy and KTG,) I think you'll see that a lot of games following them have trended towards using the same sorts of mechanics such as jump refreshers, laser gating, gravity flips, etc. Since we can safely assume that they aren't just because the code is easily available (because as far as I've seen, it isn't,) the more reasonable conclusion to draw would be that the creators of the next generations of games enjoyed playing them in previous games and tried to improve on them. For example: I would argue that I Wanna Find My Destiny's laser gating draws heavily on KTGs (although this is completely based on personal observation.) Destiny also uses a wide variety of other gimmicks that I would not personally call original per-say, but is one of the most well-recieved fangames (9.4 on Delicious Fruit out of 9 reviews, which is a fairly big sample size when it comes to data around here.) NANG is another game that uses a wide variety of time-tested gimmicks (gravity manipulation, conveyors, etc.,) and twists them into less standard forms (triple jump as an evolution of jump refreshing, for example.) It currently has a 9.4 after 14 reviews on Delicious Fruit. The originality within both of these games, and there is a lot, is more concentrated on polish and graphical flourishes, as well as the combination of a wide variety of mechanics into small sections (again, based on my observation.)
I would conclude from this that the community tends to enjoy the recombination of familiar gimmicks over brand new ones, though I would be more than willing to hear an argument from you that is less emotional and based on personal attacks.