I don’t understand. It clearly appears that one should stop disassembling after this step. Peeling off the tape here should provide access to the solder connections. Why remove a bunch of other adhered parts? ESD concerns?
Of course, taking care not to transmit heat to the screen assembly below would be prudent. But it’s unlikely much if any heat would conduct even without using any sort of insulating spacer, assuming one’s soldering technique is acceptable. With a thermal mass that small, overheating the connection is the big concern. Especially since it is lead-free solder.
(It has a high melting point. If you didn’t already know that, this is definitely not the best project to develop your soldering skills! You can still do it, but should def practice on similar connections until you feel proficient. Lifting a pad or overheating a nearby component are both dangers. Yet, the cost of the part is low enough you could buy two (just in case) and still come out ahead of Apple’s fee. Use flux or you’ll struggle!)