Can confirm. Neighbors house had an attic fire with knob & tube wiring.
… Just like the stuff still in my place today. Eek! Landlord won’t upgrade unless there is a problem. In my house, the breakers are all 20amp and that’s a lot to run on, best guess, 70 year old wires.
Oh, and do not assume anything is wired as expected. Test after. I’ve found a couple plugs “upgraded” to 3-prong by jumping the load and ground together. That made for a fun firework show when my metal fan touched something metal. Even the landlord was impressed by that stupidity.
A cheaper solution is to take a copper wire and connect the ground screw of the socket to a water pipe. It does the job and is better than nothing.
Price is definitely important, but so is traction. If stopping distance increases because eco materials grip less, that would be a concern.
My criteria are performance results, wear rating, and price.