Having a 1st Gen Tacoma and also a Rivian, I have a few thoughts on how they compare for overlanding. First with regard to range, my Rivian actually has more off road range. I have been getting about 220-240 miles per charge from the Rivian whereas I get about 200 miles in the Toyota. The Toyota refill is faster and has better fueling infrastructure but the Rivian costs 1/10 of with the Toyota does to refill. ($120 round trip from TX to CO). I'm rarely more than 200 miles from an electric outlet anyway. Regarding the statement about EV batteries going to the landfill, that's just ignorance on display. Once they're done in the vehicle they are repurposed into second life applications such as stationary energy storage for homes and buildings. Once they are no longer viable for that, they are recycled into new batteries with over 95% of the materials being reused (see redwood materials).
If I look at power and torque, the Rivian has more than 800 horsepower and 900 ft lb torque compared to my Toyota which couldn't piss uphill if it had to.
It's also nice to run a fridge 24/7 as well as a Mr Coffee without worrying about the battery drain. I can also plug in a window unit AC for hot summer nights camping in Texas.
With >18k miles and around a dozen trips taken, the biggest downside is the charging infrastructure which will take a few years to catch up.
It's also nice to not have as much vehicle maintenance or repairs (fuel pump, drive shaft, alternator, plugs, oil, radiator, etc), just tires, wipers, and windshield washer fluid.
I'm not saying EVs are perfect for overlanding nor will I give up my Tacoma (something about a manual transmission) but EVs can easily be used for most overlanding. There's just a lot of fear and misinformation around them since they are so new.