The butterfly keyboard mechanism responsible for breaking on dust particles is gone on newer laptops.

The current MacBook keyboards are quite nice, they have the same mechanism as the external Magic Keyboard sold by Apple, and they seem quite resilient. I had no stuck key in the last 2 years.

Only the new Magic Keyboard with the roundrect corners and the Globe key have the new, dust-resilient key switches from the new laptops (which preceded it).

The prior model of Magic Keyboards with the Fn key use older defective dust-vulnerable switches.

You use it outdoors? I'm typing this on one of the emoji keyboard laptops and it works so "well" that I'm not in a rush to give Apple more money for a portable...

Note that I bought the 2018 or 2019 model with extra isolation under the keys. That didn't help at all.

Yes, since the beginning of 2020 I’ve used the MacBook Pro in parks and botanical gardens where there are a lot of particles flying around (after an hour I usually had to wipe the screen to be able to see something).

The keyboard worked perfectly fine.

I haven’t had a chance to test the 2019 Intel MacBook too much, but the M1 2020 was heavily used outdoors. I believe the M1 2020 model was the first one to get the Magic Keyboard mechanism: https://support.apple.com/kb/SP824