"I have never acclimated any fish or invert or coral."
"With fish and inverts i float the bag for about 5-10min..and dump a little bit of my water in the bag every few min and thats it."
Hahahaha, sorry for laughing, but you say you "never acclimated any fish or coral," and thene you proceed to tell us your acclimation technique!
To acclimate is to get a fish/coral used to a certain "climate -whether that be lighting, temperature, or water parameters.
Your advice that acclimating is "useless" or "garbage" is a very dangerous one. You have newbies to aquariums reading the first 3 sentences and then dropping stuff in their tanks like pennies in to a fountain.
Acclimating is a necessary deed, and depending on what kind of fish/coral it is determines the length of acclimation time. If your tank have high nitrates, ammonia, copper, and high iodine in the water, and the fish is coming from water with ideal params, you are going to shock it by dropping it in the DT or dumping 25% of its current water volume right on to its head. The drip system makes the transition from bag to DT as seamless as possible. It's like a human living a lazy, couch-potato lifestyle in Death Valley all his life, and then getting dropped off in Denver CO and running a 10 miles race. HE NEEDS TO BE ACCLIMATED, BUILD UP TO IT, SO THE SHOCK TO HIS SYSTEM IS MINIMIZED.
USE YOUR HEAD WHEN YOU GIVE THIS KIND OF ADVICE TO NEWBIES.