@rustic swift Kerbal is not IS NOT a real space simulator, than base game have, also in the original KSP 1, "wobbling things", have u used the Strut Connector part to avoid "wobbling rockets"? I think no.
Change the Joint Rigidity parameter is just an easy way to avoid the Strut connectors displacement on your rockets.
Than "Do you thinks that a simple youtuber find a way to reduce the wobbling instead of the dev ?" is a bad evaluation of the real situation.
Struts connector part is equivalent (a synthesis) of tie rods and stings, than just learn how to use it in game if you want to avoid wobbling without "modded" parameters.
Easy way or Creative way?
Look at the pic, no wobbling with a right Strut connector placement.
Like in the real world, struts must be made rigid with the rods and strings 👍 .
Let's not give judgments.