The negative externality of EV car manufacturing seems net worse (today) per car. Harsher chemicals, more mining, more processing, lesser life of a car and battery, less mature tech so more wastage, etc.
Tesla might be responsible but almost all other EVs are likely externalizing a lot in their supply chain.
Anyway according to Gemini:
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In the U.S., a typical EV becomes "cleaner" than a gas car after about 15,000 to 20,000 miles (roughly 1.5 to 2 years of driving).
If your primary concern is climate change, the EV is the clear winner after about 1.5 years. If your concern is local land/human rights impact, the EV has a heavier "upfront" cost that requires better regulation to solve.
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EV is the way to go but is it going to scale sustainably to say 25% or more of all cars? Apparently yes, with the new battery tech in the pipeline.