In my experience, crimping connectors onto thicker than ideal wires leads to the sheathing/insulation being cut. If the insulation is compromised the wires will be in danger of being broken at the crimp connector from flex bending/ect.
I would agree with you on this but not for small gauge wires. It is important that we reinforce areas that see wire strain on small gauge wires. A properly crimped wire has the advantage of a collar to reduce wire strain.
Edit-
When I solder small gauge wires and bullet connectors I inject some silicon into the heat shrink to keep the wires from bending and eventually breaking.
was just about to mention almost the same as @chaka
I usually solder cables to the crimp connectors and use needle nose pliers to close the “arms” (or whatever they are called), then add some hot glue and then heat shrink to deal with strain relief.
For low current stuff like charge port and power switch, I like 18awg with XT30. with some heat shrink it’s pretty robust. 18awg for wire strength, not ampacity.
If it’s 2 wire I prefer paired sheathed connectors. XT30 are pretty tiny and pretty robust. It feels better to me than micro deans or even deans, because of the way you solder it. XT30 also has decent retention strength.