I guess, this is targeted at Apple's butterfly key switches, which were used in their 2015-2019 MacBooks and prone to fail due to dust and other small particle

I guess, this is targeted at Apple's butterfly key switches, which were used in their 2015-2019 MacBooks and prone to fail due to dust and other small particle intrusions. Compare: https://www.macrumors.com/guide/butterfly-keyboard-issues/ https://www.macrumors.com/guide/butterfly-keyboard-issues/