Totally agree with you: there is a wallet for every approach, and the important thing is to know what level of control, privacy and convenience you are looking for in each case.

I find it interesting how you are integrating Electrum, Sparrow and Bitcoin Core in different roles depending on the device and context. That combination between usability (Electrum), privacy and own-node connection (Sparrow), and maximum command-line efficiency (Bitcoin Core CLI) reflects a well thought-out architecture.

What you highlight about watch-only is also key: being able to view without compromising private keys is a security practice that many still underestimate.

Perhaps the greatest value of this ecosystem is just that: the freedom to choose the tool that aligns with your technical profile, your perceived threat and your personal philosophy. And that diversity of choice is a sign of maturity in the Bitcoin community.

Thanks for the tip, all the info is welcome, to navigate and learn from this ocean.