The way Christians act suggests otherwise. The SELFobession with salvation; it's a deal breaker and then the need to go out and 'save' others to confirm one's own delusion and obsession with the self IS solipistic.
Christians cannot 'save' others. Only God can do that. We are supposed to share the gospel w/people but we have no power to 'save' people.
Like you, I know people that claim to be Christians (that may be) that can pretty irritating and seem to come off w/a holier-than-thou attitude but I'm glad I didn't stop that from me looking into who Christ was/is. No person is going to be an adequate representation of Him.
Christ does not intend for his followers to be self-obsessed but we are concerned with others' salvation for their own sake.