For the topre haters: A Topre switch is every bit as mechanical as a Cherry MX switch, and here is why -
Both use a spring (Topre rubber) to determine the weight of the switch, and both slide up and down within a plastic housing, with a plastic slider.
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For some people, Topre is the ultimate keyboarding experience. They experience the oneness of cup rubber.
For others, the Topre doesn't
feel much different than the hated cheap rubber dome keyboards they used before.
Of course the Topre is mechanical. But its tactile feeling comes from the rubber cup (dome) being compressed. It feels totally different from a Cherry MX or Alps switch.
I tried the Topre boards for more than a week. I went back to Cherry MX switches. That's just personal preference. Hell, I used to love my buckling springs, and I hardly use them now, simply because I prefer how MX switches feel.
And anyway, by your definition, all rubber dome keyboards are mechanical also, due to the mechanical action of the plunger compressing a rubber dome on the membrane to come into contact with the pads that completes the electrical circuit.
I don't hate Topre. I just prefer MX.