How many batteries actually need to be replaced in say the first 10 years of ownership? 

That’s what I was implying.  A relatively affordable Tesla Model 3 as example with “existing” batteries already provides up to 363 miles of range, and can also charge fairly fast.  Obviously some people don’t like the styling and others hate Musk, but point is that BEVs are not all that bad even now.  There must be other hurdles, right?  IMO issue of battery replacement fears for one needs to be addressed.   As previously mentioned the upcoming Nissan Leaf and Chevy Bolt at even lower estimated prices may surprise.  Or not.  We’ll see soon enough. 

But at the same time, LFPs are good enough for most use cases...seems like people come up with an excuse just not to buy something because it does something slightly differently. 

Seems to be a bit of willful ignorance going on here that he is completely ignoring: The 2.0L made 160 horsepower at 6,500 RPM and 146 pound-feet of torque in non-ecoboost form   2.5L 168 horsepower and 170 lb-ft of torque in non-hybrid form   2.5L Hybrid is rated at 192 horsepower and 155 pound-feet of torque combined with the hybrid motor. The engine alone 162 HP   The 1.5L Ecoboost makes 181HP and 190 ft lbs   2.0L Ecoboost makes 250 horsepower and 280 lb-ft of torque   The 3.0L V6 made 240HP and 231 ft of torque   The whole point of the Ecoboost engines where to downsize from a V6 and a larger I4 to packages that give you more power and equal or better MPGs vs their larger counterparts.    The power numbers from the 2.5L are from 15 years ago, so there is a decent amount of loss from going to an Atkinson cycle given possible improvements in the power output of the engine over time. Like you said a NA 1.5L would be lucky to hit 100-120HP and a hybrid setup would maybe add another 30-40HP if you where lucky,     

Perhaps because a keyed ignition is mechanical and would be left in the on position upon shutdown, which would drain the battery?

Yeah, unfortunately solid state batteries could still be many years away.  It’s not just the technology, which is indeed promising, but also the higher cost per kWh.   Projected prices I’ve seen are still much higher than present LFP as example.

No diesel. 6.8 gasser  

Do you have a diesel?  Those might be different.

Ford's use of keyed ignitions vary across the lineup.  Some models are all push button start, and even those are not all "intelligent access". Keys do not bother me, but, it seem most want that feature and not sure what manufacturers still use keyed ignitions.  Own a 2014 F350 and 2011 Mustang GT with keyed ignitions, and have a 2023 Bronco Basequatch with basic push button start which I prefer over "intelligent access".     I also do not like the trend to all digital clusters, bigger screens and less buttons and knobs! 

22 f350 6.7 4wd  While pulling skid steer 11,000lb gravel road in 4 Hi the truck pulled hard to the left, I thought a tire went down, it stopped pulling, did it again to the right this time and started squealing really loudly. I stopped, felt all the hubs, nothing hot, full of air. Drove off and it did not do it again. The jake brake was also engaged! Anyone experience something like this?