This is not something that warranted bragging rights, imho.
With the 65# genuine CQR on 3/8" chain we often used as much as 10:1 and still didn't sleep well. Once we moved to an 88# Rocna and 1/2" chain we went down to 7:1 then 5:1 and we now rarely anchor with more than 3:1. We sleep well and worry not at all about dragging in less that 60 knots of wind.
In one situation, anchoring in an extremely crowded anchorage just to clear into SVG, the chain got hung up in 40' of water and only between 60 and 70 feet got out (or marks are at 50' and 75'), in 20 knots of wind. While Nikki ran below to unfoul the chain I stood on the fore deck thinking of all the horrible things that were about to befall us. Almost before I could muster up these dark thoughts, the Rocna dug in and Skipping Stone swung bow to wind. Whew. Nikki got the chain free and we dropped 3:1 and sat just fine until we had cleared customs and moved on to a slightly less crowded anchorage.
IMO many out there do not have the proper gear to sleep comfortably on their anchor tackle on what I learned many years ago was the proper scope; 3:1 with all chain and 5-7:1 on cable or line and chain. I've found we sit much more comfortably and quietly on 3:1. This also has the added benefit of the chain wearing much less as more is suspended and less is dragging around on the bottom.
For every one of us our anchor tackle can be the difference between losing the boat and possibly fatal consequences for the crew, yet many are hesitant to spend the money on the tackle we should have. This includes a powered windlass of the proper size as well as the proper anchor tackle for our boats. It is a complete fallacy to say that a powered windlass will fail one day as any proper powered windlass can be used manually exactly as a manual one is; with a bar meant for exactly that purpose. Numerous times I have seen someone on dragging boats with a manual windlass cranking away to exhaustion trying to bring up their gear in a big squall, dragging their anchor along the bottom, just barely missing fouling other well anchored boats' gear, when they could have gotten their gear up quickly (most good powered windlasses operate at around 60 fpm), efficiently and without risking the boat or their heart.
There is nothing better than being able to sleep soundly at night because you know without a doubt that your anchor tackle will do it's job. However, I don't have a cure for worrying about the other boats other than not anchoring where they would and that seems like you'd have to pick some pretty uncomfortable anchorages to achieve that.
As for backing down on my anchor, for the first year we had the Rocna and heavier chain, we dove on the anchor nearly every single time we dropped it and did not back down on it, but rather let the wind and the boat's weight set the pick. It was the rare day when the Rocna dragged it's own length before setting. Of course, if we are Med mooring or there is no wind at all, we will gently set the anchor, but I'm not a big fan of powering back and unsetting an anchor before it has had the time to set. Some seem to miss their farm and their plow, making up for it by dragging their anchor backing down hard, plowing the bay bottom over and over again.
Believe me, I was not impressed by the idea of a "nextgen" anchor until I tried one. Now I'm completely sold. I still carry 4 older anchors for extreme situations like hurricanes, but no longer even carry a second anchor on the bow. I do use a stout snub line, 1" nylon, though and can rig two should it ever be necessary.