1. ooooo ****ed up
2. nah, not really. Metallica and Iron Maiden are decently similar (though Maiden today is starting to resemble classical a litlte bit - go look up Empire of the Clouds) while early Nightwish had excellent power metal songs (kinda like Maiden and Metallica which I both consider power metal) and the new one has soft metal songs that are very beautiful (Elan, Endless Forms Most Beautiful [no pun intended],...).
What I really mean is that there are good and bad songs in metal (not a big fan of Maiden's Where Eagles Dare song for some reason), just like in any other genre, like rap, country, etc. The difference is the bad songs in mainstream pop are REALLY awful... the popular Harlem Shake was just a part of the actual song, but man what do people do with it? Just moving crazily around the floor... wtf. Gentleman? It might be a parody but it's a bad one (unlike Gangnam Style) since it makes fun of women... dear PSY, you're not a South Park character. Hangover is something I don't need to explain.
Of all those mainstream pop artists I mentioned only 1D writes their own lyrics, but they're not very good at it.... "couple billion girls, find another one cause she's mine"... meh. For me the capability of writing your own song, unless it's a parody or something, matters quite a bit, though there are some songs where I'll let it slide (Khaled - C'est la vie).
Song titles aren't something to be ignored imo. "Beez in the Trap" is a ridiculous title and you know it... IT'S ABOUT BEES IN YOUR BUTTHOLE!!! If Nicki has something like that in her ass, she should see a doctor, not rap about it. Also since when do bees make their homes in your ass? Not gonna extend this further lol...
"Stupid Hoe" - ok, this is less disturbing, but it still seems really stupid to me.
And one more... "Best Song Ever" by 1D. I get it, it's about "dancing all night to the best song ever"... but the title chosen makes you think "did 1D just make a song and think it's the best song ever?" and that's how some go on and say "more like the worst song ever" lol.