I get a sense that some people change languages or frameworks frequently just due to boredom, inability to commit to any one thing or a desire to pad their resu

I get a sense that some people change languages or frameworks frequently just due to boredom, inability to commit to any one thing or a desire to pad their resume with buzzwords. It's just like everything else - great programmers will tell you to learn multiple languages to expand your mind. Mediocre programmers will twist that around and use it as rational to flip-flop around without developing any deep knowledge.