This thread is about "Crimping versus Soldering". You seemed to bring up CFR rules in defense of ABYC rules regarding this subject when you stated "The ABYC standards are partly derived from the CFR". CFR rules do not say a soldered wire termination must have a "mechanical connection, then solder" as you stated. CFR rules say you can have EITHER a pressure type connector or a solder lug, EITHER a pressure type splice connector or a soldered splice.
The point is, soldering is fine when done properly just as crimping is fine when done properly just as crimping and then soldering is fine when done properly. Iv'e seen PLENTY of improperly installed terminations done either way. The debate goes on because of all the instant Internet "experts" who have little experience and don't know what the heck they are talking about.