This is why I prefer short sessions and requiring frequent, passwordless, biometric authentication. Still relatively low friction for the user, and no password to remember or forget, while still reasonably high friction for an attacker.
I’d assume this new SE, like the 6, 6S, 7, and 8 before it, will continue to prompt users during the initial out-of-box setup process if they want to run their display in “zoomed-in” mode, making the resolution effectively identical to the 4” screen of the older smaller phones.
This is effectively an accessibility feature, but Apple proactively prompts users to enable it.
I believe Apple has stated they don't ever throttle the CPU on their current generation iPhones, i.e., they wait until they've been out for a full year and replaced by the next generation.