That's just not true anymore -- I'm coming up on year three with my non-Tesla, and it's been perfect, road trips and all.
Tesla still has its brand recognition and inertia in its favor, but it's tougher for them when you can get equally good if not better cars elsewhere.
The last time I rented an EV in the SF Bay Area (a year or two ago, a Leaf), I had trouble even finding enough charging stations just to get around the area, like from SF to the South Bay and then to Santa Cruz. The few chargers I did find had several broken stations, multiple people waiting in line for the one working one, and it was very expensive. We wasted hours of time on that experience.
Has it gotten significantly better since then?
In your case, the Leaf is the single EV that should never be or have been sold or rented out since around 2020. It's ancient and is the last EV lacking support for the major fast charging plugs in north America, so I'm not surprised you had charging issues! I'm really sorry they gave you that car!
https://www.motortrend.com/cars/nissan/leaf/2026/
...also, pretty much anything other than the Chevy Bolt will fast-charge at a rate at least 2-3 times faster than the Leaf and possible even faster than that (depending on model).
I chatted with a poor fellow in a Leaf trying and failing to charge on the single sad broken CHAdeMO plug at a station, and was just thinking... yeah, Nissan sold you a bad car, I'm really really sorry.