How many people here have actually had their electronic devices searched by customs? I don't know anyone who's had that experience.
They have rights to do this but they super rarely do it.
Except if you are recognized by them as a threat like a terrorist and the like by true or mistaken, they will not touch you and search your electronic devices. Risk exists but not too big.
I like the idea to uninstall wallet applications on my electronic devices and have my seed phrase in a book and in brain. If it is only for traveling, I have little reasons to bring my big wallet, all my bitcoin around and across borders, airports. By bringing a small hot wallet through traveling, I reduce risk of losing all my bitcoin.