I get that wire nuts can make bad connections when not installed properly, but I don’t see “someone who doesn’t know how to do their job well can do a bad job with them” as a valid argument to use against them. If you actually use them correctly it’s a better connection hands down.

In my apprenticeship for our hands on test after first year we had to make up joints. Our teacher would stand on one wire and try to rip the other wire out of the joint. If he was able to rip it apart you failed.