After the one time setup:
- I have the low cost T-Mobile plan domestic and international
- On the second eSIM line I have prepaid AT&T for areas with no T-Mobile coverage
- When I travel to Europe, I turn on the Telekom eSIM line and use it for local data in all of the EU
- I don't have to remove the case
- I don't have to change physical SIM and risk losing it e.g. in an airplane or at airport (have done that before)
It is as easy as flipping a switch in the settings (takes only a few seconds) and turn on data for this plan. I do it when I board the airplane or when I land. It's much easier than the 3 SIM's I had to have before to achieve the same.
Actually, when I travelled I had two phones. My current one so I can be reached under my main number and my old unlocked phone with the local SIM for data. Now I only have to carry one phone.
On the other side, if you don't like what the OP is asking for, than you could just move on ... We do understand that not everyone travels internationally and domestic and doesn't have a large use for it.