BUR #21118 has been approved by @nonamethanks.
remove alias swim_ring -> innertube
Previous topic: topic #17296.
One need only open holding_innertube (which implies innertube) to realize just how confused people are on the distinction between innertube and lifebuoy.
If we're dead set on saying that lifebuoys are not innertubes (or whatever you want to call them), then we still need an umbrella tag, because at the end of the day user sees swim ring = user tags whatever regional name user knows the object as. It's obvious that an umbrella tag for people who don't care about technical distinctions between the fabric and content of the tube and whatnot is needed. Those who care about the separation can then fix innertube/lifebuoy mistags without inconveniencing the average user.
If you disagree please provide an alternative to this BUR.
Updated