Apple designed the latch to be released with a Magnet. That's it. That is the tool to be used.
Avoid frustration, hassles, wasted time: simply buy a "neodimio" Magnet.
Actually yes – IMHO It would have preferred iFixtit had mentioned a MAGNET to release the front Bezel, the credit card in an awkward and misleading (and not so smart) method.
I hope iFixit will change Step 3.