Those are very expensive. Yikes.
I won’t pry into your business model, but I’d suggest looking at something cheaper like the CW Industries switch series in Digikey. This is an example, but there are less expensive options: https://www.digikey.com/product-detail/en/cw-industries/GPB556A05BR/CW158-ND/2349753
You’ll need to debounce the switches in hardware or software. (Which is an old industry debate like putting ketchup on hot dogs) You will most likely need an oscilloscope to do this as every switch is different. This will give you the basis to set a time constant for debounce in hardware or software.
As you progress in volume, if you need water/splash protection on a quantity basis and don’t need an industrialized or very abuse tolerant switch, there are lots of options with custom keypads with either polycarbonate or rubber overlays that are quite good and take far less manufacturing time that discrete, panel mount buttons. Obviously there is tooling and engineering, but if you’re installing several panel mount switches in a price-sensitive product, costs will add up quickly.
Jack Ganssele has written much about switch debounce. This isn’t rocket science to be sure, but is just necessary engineering that needs to be done right, up front.