That said, unlike Pixels and OnePlus once the bootloader is unlocked you lose functionality and it's not relockable. It also almost always has some software quirks and I most recently found out that the Xperia 5 I've been eyeing will after 2-3 years of use randomly break and show vertical green or pink lines.
There you have another "well" manufactured phone with external storage that becomes almost unusable faster than the storage degrades without the user being responsible for it.