I don’t really see why people are against it, personally I never buy locked devices but they are usually a chunk cheaper and there is always an option for a locked device.
If telecoms were making certain phones exclusively locked (as in not selling unlocked phones) it would be a problem. But rn it seems that it is an easy way to save money if you like a carrier.
okay but you end up paying more - if it was just normal data plan and cost of phone it would be even, but there’s also something paid to middleman that provides something that is effectively credit and extortion services like simlock and some legal thingies, it might have smaller downpayment but it’s not this, see also en.wikipedia.org/wiki/Boots_theory
this is on top of various security and privacy implications of using a phone which you can’t legally reflash
Boots theory doesn’t really apply because it is the exact same phone/hardware. Plus most people don’t really care about reflashing their phone.
As for the privacy stuff I don’t really know much about it in the context of locked phones so I’ll take your word for it.