No - I don't recommend EVER putting a SIM card (or esim) into a mobile phone
Not just to avoid tracking. The Pegasus spyware exploits also work through missed calls and SMS. You can pretty much eliminate that threat by avoiding the use of GSM networks.
Yes I know it's inconvenient, yes I know that it's difficult to explain to grandma, but we all need to move away from our reliance on phone numbers.
Could we have both by having a sim in the phone, having the phone on airplane mode and using wifi calling? This works great for me. Agree that in the long term phone numbers need to go.
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I've never tried wifi calls like that, but sounds reasonable if you're happy with your analytics being shared through your telco provider
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