I am an 'options' guy. I like having options.
I do believe that being part of a semi-formal organized group is my best option for surviving most possibilities. However, there are times and situations where I will need to, and have plans to, go 'lone-wolf' (a modified version of the accepted definition) in some situations. There very well could be times when I will not be with the group, or have their assistance available to me, and will have to work alone. I believe it is much better to have the plans in place, and to have practiced them ahead of time, than depending on having the group under every circumstance.
And I am a believer in MAAs between MAGs. Mutual Aid Agreements between Mutual Aid Groups. Basically, a set of independent prepper groups that have made contact with each other and have agreed to lend assistance to each other if needed. For defense, for food production/distribution, resource acquisition/distribution, etc.
Just my opinion.