One of the golden rules of the Smash community. If it isn't hard, it's Mario Party.
The problem with your assertion, that the technical barriers could easily be overcome with work is flawed because we are playing a damn video game, not working a job. Video games are suppose to be something we do for fun and in our spare time. Most people work 40 hours a week or more. These people, the average man, doesn't want to spend his time "overcoming barriers." He wants to play some video games. Even for those in school who don't work ful time jobs, they would rather spend their time on classes, studying, the opposite sex and other activities. Not "overcoming barriers." The problem is the competitive community is not the norm, they are the exception. People don't want to master tech skills and boost their APM. They want to play a video game. They want to get to enjoying their game, not overcoming barriers. Getting better is not a priority.
What the community doesn't understand is they are not a special snowflake. Brawl sold over 11 million and the community probably only makes a percent or two of that. Most people don't want these tech barriers and they loudly voiced themselves on this matter during Brawl's development. The argument that "They wont notice they are there," flies out the window in an online environment. People were upset about Snaking for the same reason (and that is far easier than the stuff in Melee).The lack of tech skills does not take away from the competitive nature of the game. Up until E3 2013, the biggest Smash tournament was Brawl at Apex 2013. It hasn't stopped the Japanese from trying to master the game. The problem is the community can't let go of Melee. Case in point, tech skills for their sake only take away from the game and are only for people who's lives revolve around the game. Most people's games revolve around their life. As there are over 11 million fans of the series, they don't want to see their beloved series turn into a game that's not for them. Smash grew by being for intermediate players, not the best of the best. Tech skills throws away everything the series has built up.