I've mentioned this before but in the US only T-Mobile allows EID-only activation. Verizon checks to see if the device IMEI matches the EID. AT&T is even worse and only allows whitelisted IMEI's on their network.
TL;DR: More useful for international travel, less useful for US domestic carriers. There's a few T-Mobile MVNO's that are cheap/free you might be able to use this with.
It’s infuriating that US carriers still cargo cult their old CDMA/SIM-less habits even in this day of 3GPP-only LTE/5G.
Sure, they can support the EID flow if they must to support whatever legacy distribution channels, but would it kill them to also support the QR-based eSIM flow like literally every other country in the world?
TL;DR: More useful for international travel, less useful for US domestic carriers. There's a few T-Mobile MVNO's that are cheap/free you might be able to use this with.