10 years ago, this became a fad, and many people were caught up in it.
flip out / go crazy / be charmed with / be bitten by...
become a fad / get hot / go round / become prevalent ...
流行るは、become a fad / get hot / become prevalent などいろいろな表現があります。
夢中になるは、flip out / go crazy / be bitten by などこれも、いろいろな表現があります。
流行する、もの、夢中になるものによって、使い分けが必要です。
This was really popular 10 years ago. Everyone was into it .
These were all the rage 10 years ago. People were nuts about these things.
この場合、次のような言い方ができますよ。
ーThis was really popular 10 years ago. Everyone was into it .
「これは10年前すごく流行っていて、みんな夢中だった」
to be into ... で「…に夢中になる」
ーThese were all the rage 10 years ago. People were nuts about these things.
「これらは10年前すごく流行っていて、みんなこれに夢中だった」
to be nuts about ... で「…に夢中になる」とも言えます。
ご参考まで!