yeah because band presses are arguably the most common accessory lift for powerlifters. if you've never seen someone lift with bands or even heard of the fuckin thing there's no way you've ever lifted in a gym that wasn't attached to a health club. shit even guys at the local ymca use bands.
it's for top end strength, the bar weighs less at the bottom than it does on the top. it also makes you bench faster because if you push slowly you'll never lock it out. you need to get a lot of speed or the bands will stop you from finishing the lift.
No, I trained for years in a couple different hole in the wall gyms that produced powerlifting teams, npc bbs, wrestlers, college athletes, etc....rust, chalk, thrash metal and must.......one gym has been around for decades......good powerlifters produced there, but I have never seen anchored elastic bands and currently I train at Gold's......have trained at traditional gyms, YMCA, health clubs, hole in the wall gyms, outdoor makeshifts gyms, resort gyms, etc.....and I have never seen that.