I’m familiar with the term Mutual Aid. I am aware that it is an aspect of grassroots organization. I don’t see how it has relevance to what we are talking about, regardless of trying to build a gift economy on the ground.
Theory is necessary because it informs correct practice. The SRs celebrated an “end to theorg,” while Lenin and the Bolsheviks pushed for using every tool you could to your advantage. The SRs, of course, failed.
There’s a difference between trying to relay complex theory to trying to hide that you’re a Leftist or describe concepts while hiding the proper terms for them. You can explain concepts like classes without shying away from terms like “Capital ownership.”
There is legitimately a problem with miscommunication on the Left, getting on the same page helps information flow more effectively.