Very strong disagree that this is required. Proof: the millions of people who have enjoyed it for 200 years without knowing a cadence from a cor anglais.
Can it help? Sure, probably. I'm a big fan of Rop Kapilow's "What Makes It Great?" series where he does lively walkthroughs of pieces of (usually) classical music [1].
> I think it's much easier to connect with Rock/Pop because the works are much, much simple
I don't think it's about simplicity at all. In the end, all music is a language (in a literal sense) and if you grew up with rock music then you understand and relate to that language, and others will sound foreign. Same for people in China, or in India with ragas and microtones, or people in Mexico who grew up listening to Norteño music with those (to me, nonsensical) drum breaks.
And like any language, sometimes it doesn't come naturally but with enough exposure, one can start to "understand" (in the intuitive sense) what is being said. And there are certainly pieces than are better than others for making the transition into a new genre.
[1] Rob Kapilow is at Stanford's Bing Concert Hall about twice a year. Highly recommended!