First, we'll take a look at Morbid Angel's "Chapel of Ghouls." Back in '89 when Morbid Angel stormed the scene with Altars of Madness, they were the most aggressive, evil, and harsh thing anyone could think of--they were literally Satan's spawn. The band (and "Chapel of Ghouls") were something original, something that produced countless imitators, and something that defined death metal. At this point, it's really hard for me to believe this track is 21 or 22 years old because it's still so fresh. Death metal's been around for over 20 years? YOWZA! Unfortunately, I wasn't alive when the track was first released, but I would have loved to see the revolution that this and other OSDM created.
Next up we have Hour of Penance with...wait for it... "Paradogma." Surprise! I'd wager this is the band's most well-known track, and rightfully so because of the epic orchestrated intro that explodes into a kick in the teeth. Sure, it's been done before, but hasn't most everything in metal at this point? Go create something new if you're going to whine about it!
Decide which one you like better for yourself, but hopefully you can appreciate both because they are each great pieces of music. Bot classic and modern music have their places in a metalhead's collection; it's merely a matter of acquiring a taste for both, or being able to understand the music going on around you. Or, you know, you just dislike one or the other.