Will Bitcoin talkers agree with me that Bitcoin is Mutuality because we all depend on each other on the p2p network both for Bitcoin values and it's transaction.
Not really. The smallest possible network is just one node doining the mining and storing blockchain. This node can even send transactions between their own addresses. This node doesn't need other nodes to make Bitcoin more secure, everything is secured by cryptography. Of course on practice its better to have a large network, but still Bitcoin was designed in a way that you don't need to depend on anybody else.
Lastly since Bitcoin operate independent of third party standing as a community to debunk any FUD about Bitcoin POW is a collective responsibility of everyone who operate on this forum and beyond.
Yes, it benefits you to publicly promote your investment, but that's work, so the optimal thing is to let someone else do it for free.