I have to admit as a young rider Iv have the tech or me, but ill give my 2cents.
Its all about the trail relative to the bike imo.
The level at which people used to ride is easier now with more technology without a doubt, but as tech has increased so have trails, the difference is people are not pushing the same level. If you ride the same trail at the same speed on a old bike and a new bike, the new bike is much easier, where the old bike is hitting 100% capability the new bike is probably reaching 60%, going faster on the new bike will improve time and probably still only use 70% of its capability because they are built to handle more intense riding stuff.
Take the new bike to champery, bromont, fort will, and then ride it 100% it's no where near easy.
Take the old bike and your probably be walking down.
The difference is the trail, what used to cut it as a hard trail is just a moderate trail now with new tech, we now need to push the limits again. If your riding a old bike on a old hard trail and a new bike on the new hard trails then by no means is the riding easier just faster.because the bikes performance is relative to the trail.
If you ride a old hard trail on a new bike though its amples easier.
Edit:
To add to my original post this is what happens.
http://www.rotorburn.com/forums/showthread.php?179789-The-Evolution-of-the-Awaba-Rock-Garden
If we took a photo today it would probably look more tech again. We develop and tracks do to but the effort it takes and balls remain the same. All about relevance between track and technology. As tech goes up we need to ride faster and harder trails.