In the thread created by @Elohssa it was asked if the repair of wires shown in the video by Robosource is legal. It is legal and backed up by R15 as in the screenshot below.
Here’s also some previous rulings talking about specific details:
https://vexforum.com/t/answered-r15aii-replacing-crimped-on-pins-on-wires/35843/1
https://vexforum.com/t/answered-legality-of-wires-connector-repairs/32491/1