Yeah, I'd say Emo really got going after 2000, at least in my experience

Emo is very specific sub genre of punk, but yeah, even the goths were very dressed down in 2000's and emos and goths looked really similar

I was also nu metal and dressed the same, BAGGY jeans, wallet chains and skater trainers. We were "Moshers" where I was from.

Then there came a wave of boy bands with the Mosh aesthetic, like the music industry was trying to sell pop to Moshers. Good Charlotte was one of them.

This brought a whole new wave of kids into the fold, but they were drawn in by different music. These were the Emos and, like us Moshers, were generally frowned upon by those in for longer. The Metal Kids called us Moshers "Posers" or "Wanabees" and we treated Emos the same way.

Decades later my Mosh Wife I lovingly refer to as a Nemo for loving My Chemical Romance and say I'm "a bit Gothy" sometimes, it's all just blended into the alternative subculture.

Most of my close friends are a bit older than me, part of the generation that called me a poser back in the day, and we still poke fun at each others taste in metal but we all headbang to all the tunes, it's just Banter at this stage.