Various contributions on this and other forum sites (search for key words to find pertinent posts) collectively discuss the (relatively brief) history of the Tesla 14-50 Wall Connector (WC). I am no expert, but it was apparently an interesting idea that just did not take off. They were only offered for less than a year, in 2019, right? I speculated (in this thread, I believe) that the 14-50 WC version was unfortunately found to combine undesirable aspects of both the similar-looking Tesla Gen 2 High Power (HP) Wall Connector and of the competing bare NEMA 14-50 receptacle (with 14-50 Mobile Connector or Gen 2 Mobile Connector & 14-50 adapter) charging options in one--e.g., maximum limit of only 40-amp continuous charging, relatively higher cost, expensive GFI breaker (eventually) needed, NEMA 14-50 receptacle always required, somewhat less weather-proof installation, inability to pair with another WC to charge two Tesla cars simultaneously (is that right?), etcetera. In addition to likely modest direct sales, there were some reports that those Tesla owners who acquired them frequently got them as promotional freebies (e.g., often in Canada?). Regardless, there were good 14-50R alternatives and I suspect that total sales were just not adequate enough to justify continued production.* I imagine that people who were willing to spring for installation of a wall connector probably just went for the high power 80-amp (Gen 2) version--especially since the HPWC could be easily "turned down" to 40 amps continuous. At least that's my guess.
I speculate that 2019 sales were modest because just a year later it can be difficult or near impossible to find a new or even a used 14-50 WC for sale on eBay or Craig's List in many markets. Compare that to the likelihood of finding other Tesla charging options--a Gen 2 HPWC or Gen 2 Mobile Connector, for example--those are much more readily available on the you-sell-it websites. (It is also difficult to find a 14-50 Mobile Connector cable at a decent price on those sites.) So either people are hoarding Tesla 14-50 WCs (why?), or there were just not that many distributed to consumers.
Nonetheless, the 14-50 WC was and remains, for some, an interesting option. Charging at 40-amps continuous is apparently more than adequate for overnight charging, and is somewhat faster than the 32-amps continuous available with the Gen 2 Mobile Connector. Several do-it-yourselfers have reported modifying the Gen 2 Wall Connector with a NEMA 14-50P pigtail cord in order to make their own homemade 14-50 WC and thereby connect to a 50-amp circuit with 14-50 receptacle, just like with the original Tesla 14-50 WC product.
In the end, I don't know which is more difficult--choosing from among the Tesla car-model versions, or selecting the best home-charge-connection alternative.
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* But who knows, maybe they will return to the Tesla charging accessory website?
