The primary reason that most Tesla's suffer for resale value isn't because of anything consumer related - it's because Tesla has persistently lowered the MSRP on their new vehicles over the past four years as manufacturing costs have come down due to economies of scale, gigacasting, and other efficiency improvements on the manufacturing lines over time. MSP's used to sell for $140-150k - now you can buy a MS Plaid for $90k brand new - so resale values have come down in line with major drops in MSRP over time. Same thing with all of the Tesla models. Our MY was $58k plus TTL in March 2023, now that exact same (better really since improvements have been made) MY LR can be purchased for $48k plus TTL.
IMHO most other BEVs aren't selling as well because they aren't real SDVs, they are simply ICE vehicles converted to BEV - like the F150L for example. Most people who buy BEVs don't really want "the same old thing" that's been built for the past 30 years, they want something nextgen - they want a SDV - and Tesla is the only company out there building SDVs outside of a few brands from China right now. That's why from a market share standpoint, there's Tesla, and then there's everyone else, at least here in the US, still to this day. Over time I expect this to change, as other manufacturers actually figure out how to build SDVs, but this issue is why the big three keep pushing back there timelines, it's not nearly as easy as they thought, and it takes a lot of modernization efforts to be able to become a software company primarily, as opposed to a hardware company. Just my two cents of course.