Good technique only doesn't win titles or put your name high in the history books. I keep reading that Michelle Kwan didn't have a "good technique" but she dominated figure skating in the 90 and history remembers her as one of the greatest. I don't get this trend of shaming skaters because they don't have "proper" technique. Ok, penalise the skaters if the international rules made by the government body of this sport say that they are doing badly a certain jump or skill. Not by internet experts.
I always hated the word "proper" and the expression "text book". By what standards, by what book? Technique can vary from schol to school, from country to country. It's only one "proper" way of doing jumps? What are the actual official rules comparing to the rules made up by fans online because they like a certain skater and they use him/her as a standard? It's confusing to say the least
Good jump technique is the foundation for jumps. They might not win you medals by themselves, but they can certainly keep you off podiums and derail your career (e.g. Asada, Med, Radianova, Pogo, ). Tukt has been able to hold onto longevity precisely because she has textbook jump technique, despite everything else about her skating being mediocre at best. There are "textbook" jumps for landings and positions that are widely agreed upon.