Wow, watching that Mr. Interface video, when he’s unbending leads he lifts pads like crazy. Also, his yank-switches-with-pliers method is guaranteed to break off the little plastic clips that hold switches to the plate, if the plate is tight. (Most old Apple keyboards have pretty loose plates, so just yanking the switches out probably won’t break the clips. But do that e.g. on a DC-2014 and you’ll break clips on 50% of those sweet blue Alps switches.)
I’ve mentioned this before, but with careful technique it’s possible to desolder bent-over legs without lifting pads. Here’s what I do:
For each of these steps, I do the whole board at once, and then come in with the next step across the whole board. This saves time.
(1) heat up the joint with a soldering iron and use a soldapullt to suck almost all of the solder away. bent-over leads will still have some solder sticking them to the pad, ignore that for now. make sure to also desolder all the leads of any LEDs mounted in the switches
(2) heat up the bent-over lead with a soldering iron, and simultaneously, using a dental pick or other similar tiny tool, gently pry upward on the lead. The heat should melt that last bit of solder, so the lead will “pop” free of the pad, and not stick to it again (since there’s really not much solder left after step 1).
(3) using a small pair of serrated-tooth snipe-nosed pliers, bend the bent-over lead into an upright position
(4) now once all the switches are unstuck from anything, remove any screws holding the pcb and plate together, and just lift the whole pcb off. there should be nothing holding it down at this point (usually I end up missing a couple of solder joints or bent-over leads in the previous steps, the first time around, so I just go back and fix them now)
(5) with the PCB removed, it's possible to push the switches out of the plate from the back while simultaneously pressing the little plastic clips inward so they don’t break off. Occasionally one is already weakened or broken, but in general I can get >95% of the switches out without any broken plastic clips
Overall, I’d say each bent-over lead takes about twice (maybe 2.5x) as long to desolder as each unbent lead, when you do the steps in batches. If you’re careful, you won’t lift any pads at all.