Agree. The first thing I noticed when moving from a 2013 MBP to a 2016 model was that I started making more typos and the lower travel also meant that typing a long time was more fatigueing because it did feel like hitting the case directly.I am not a big fan of the new keyboards after daily use for a year. M1 MacBook Pro has been my daily driver.
I make tons of typos on them, mainly from hitting adjacent keys -- a problem with key spacing, material texture/feel, and tactile feedback. They feel slippery, keys next to each other too close, and I always feel like my fingers are sliding around trying to intuit the right key. I hit a lot of adjacent keys touch-typing at normal speed.
The MacBook Pro w/Retina (2012~2015) and that generation of MacBook Air (even the 11-inch) had the best keyboards imo. Still the gold standard, in terms of key spacing, travel. I still type long emails and prose on it, with the fewer amount of typos and most pleasure. I sold off my M1 MBP just last week for $3000 and am back on my 2015 Retina MacBook Pro now, even though it's in its 7th year. It's night and day better.
I'm not old-fashioned -- I type developer documentation and write business books for a living, and I have tried changing to the newest, full-time, with an open mind. Sometimes, the quality drop just says otherwise, and this is a case where the proof is in the pudding. When you make noticeably more typos on a newer keyboard, one year later, it isn't you; it's the keyboard.
I agree with OP; it is subjective only to the degree that some people can tolerate poor ergonomic design more than another, but if you compared -- literally measured -- key travel, spacing between keys, and the number of typos you make typing at your normal speed after sufficient practice, then it isn't subjective, it's measurably objectively worse.
Don't listen to reviews. Listen to your fingers.
The keyboard on my 2019 MBP is at least better than the 2016-2018 models. It has less sideways wobble than the <=2015 models but the travel is still terrible.
I have a separate Apple keyboard with the <= 2015 keys and that feels really nice to type on, saying this as someone who mainly uses a mechanical keyboard with Cherry MX Clear switches.
Apple really should not have messed with a good thing just to make their devices ever slimmer.