this is from hakko's official marketing blurb about the FX-888D

this is what said interface looks like. that's all there is other than a power switch on the side. you can't tell me that's easy to use, that's the most unintuitive interface imaginable
-F

@Felthry wh...

...does... does the up button increase the temperature??... d-does it have an upper limit??... does it just keep going up infinitely???

.... and... why does the enter button exist what purpose could it have

@Nine the up button cycles between five preset temperatures, and there's some arcane method of changing the presets that you can't do without the manual

there's also a password system, somehow, for process control
-F

@Felthry @Nine …what if you need it a few degrees hotter on the spot

@noiob @Nine gotta go through the complicated process of changing the presets
-F

@Felthry @Nine what happened to just having "up" and "down"

@Felthry @Nine they gotta be trolling righ

@noiob @Nine it's only two buttons to keep track of!
-F

@noiob @Nine none of that annoyance of "having to remember the layout of a keypad" or "having up and down buttons"
-F

@Felthry @Nine I have a two-button USB soldering iron that has a more intuitive interface than this

@Felthry @Nine you can put a password on your soldering iron