Agreed with the vast majority of responders here that Elon's move is an appallingly bad one, for countless reasons.
The "$25k car" slated for next year will undoubtedly have somewhat lower range than the existing base models. (Currently 272mi / 260mi for Model 3/Y, respectively.) I just went on a 3500-mile roadtrip in my Model Y LR (310-mile range), CA -> AZ -> NM -> TX and back, and the Supercharger spacing made it surprisingly challenging at times, with numerous "single point of failure" sites that would have completely stranded us in an outage. (And some that did delay us by hours due to overcrowding and broken / reduced-power chargers.) In a 200-mile car, the trip would have been extremely difficult, if not practically impossible, even with all Superchargers operational. As it was, there were some waypoints we really wanted to reach but couldn't.
In the next 3-5 years, Tesla will need to roughly double the Supercharger density along most rural interstate routes, to accommodate the anticipated upcoming fleet of millions of "$25k" cars with reduced range. (Both their own, and competitors.) Slashing the entire Supercharger team and buildout will not get this done. Even if many of them are eventually re-hired, the trust for external contractors or companies to work with Tesla on this has now been badly damaged, if not destroyed.
Looking further ahead, future Tesla vehicles will likely need very specific upgrades to the Supercharger stations. (E.g. Robotaxi may need an autonomous "Snake" mechanism to plug/unplug without humans in the loop.) If Tesla abandons its own buildout, and if by the end of the decade the majority of NACS L3 charging sites are therefore built and operated by competitors, good luck getting them to support autonomous Robotaxi charging. They also may decide not to support the Tesla Nav system that makes charging integrate so seamlessly with the car's software, unless Tesla had the foresight to make this a condition of licensing the standard. But as far as I know, although other manufacturers have tentatively committed to supporting the NACS spec in their vehicles and adapters, there are no NACS Supercharging stations yet other than those built and operated by Tesla. So there is no guarantee that further NACS buildout (new stations) will happen at all, unless Tesla does it themselves. And they've just kneecapped their own ability to do so.
To me, this situation ranks right up there with "Elon buys Twitter" and "Trump wins 2016 election" (sorry for the politics) in terms of giving me that sinking feeling, in terms of the future feeling so much brighter had it not happened, or gone the other way. It may be survivable, but it feels like such a massive and avoidable self-inflicted setback. Sigh.