I will :lol. Becasue the OP is getting his stuff installed so the thread is /done, so why not.
The reason I dont like crimp connections:
Expensive: unless you buy a case of connectors in bulk, spending $5 for them adds up quick when your doing a $50 job for someone. the cheap ass ones are junk, the softer plastic ones are nicer IMO. Coil of solder would last you 20 HU installs at $8 and a $0.97 5 pack of heat shrink tubing will do an HU and a half (12 connections ave. per).
Cleanlyness: they just look better and more professional. Also its alot cleaner, and lower profile to e-tape up a bunch of 24ga outside dia connections together than 12 butt connectors or the traffic cone shaped crimp connectors together in a bundle. Makes it alot easier to suff the wires into the dash.
Could still short out: Proper install aside, if a stray wire were to somehow jiggle itself into the crimped end it could short. long shot but still.
Quickness: Strip both harnesses, tin the leads, slide on heat shrink, solder the joint, heat the tubeing, e-tape up the wire bundle.
Reasons I dont like heat shrink tubing/soldered joints:
Vibrations can wear a heat shrink tube through and short out. if the wires are laying on a sharp metal edge when you stuff it all back in there it the vibrations from driving could wear the tubing down.
Heat can “over shrink” more or less burn the tubing and short out. If they are near the heatsink on the HU, over heat the connection due to using too small a ga. wire for the load…
All comes down to proper install, both ways. Different strokes for different folks.