How do আপনি feel about individuals who basically don't know/have no idea WHO অথবা WHAT you're talking about over just about anything (from চলচ্চিত্র and সঙ্গীত to history, current events, and animals)?

i was like that before knowing জীবন্ত xD
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btw
nice তালিকা of yours i like most of what আপনি mentioned

I don't mind, not everyone is gonna know everything/one.

Though I do প্রণয় your তালিকা and think everyone should listen to Celine; she was my পছন্দ as a kid. But each generation has a different bunch of singers to know and love.

I'm likely one of those people. :| I actually haven't seen very many movies/shows, at least compared to most people my age.

They're just people who don't know about everything আপনি know. These bands were জনপ্রিয় back in the day, and not many kids (if any) even know who they are, and it's not they're fault. We all live in our own unique generation. Each generation grows up around things only they would know about. Unless there's shows like Power Rangers that has been around since the 90's.

It doesn't bother me because there are people that aren't knowledgable on those subjects

Dude some people just don't know sometimes. I mean আপনি don't know stuff your parents knew and vice versa. It doesn't bother me that much tbh.

Not everyone going to know everything about things its not needed if আপনি like something আপনি like it. People also have different experiences and are from different generations.