Loosely, there are two types of non-religious people. People who never really took religion to heart in the first place, and the others who put a lot of themselves into it, which ironically led to them losing faith.
There's little correlation between dedication as a Christian, and outspokenness as an atheist. That's more dependent on personality, agreeableness or its lack to be specific. Given out environment, that makes a lot of sense. Being non-religious is frowned upon, so an agreeable
person would rather just avoid the social stress of being outspokenly non-religious.
On the other hand, society is unfair towards unreligious people, so people with a strong self of independence, or rebellious streak, or assertiveness, tend to be outspoken regardless of how they
On the other hand, society is unfair towards unreligious people, so people with a strong self of independence, or rebellious streak, or assertiveness, tend to be outspoken regardless of how they
were as Christians.
I would say people who were formally seriously religious tend to feel the deepest about their atheism. This may not necessarily be reflected outwards, but it fairly transmits inwards.
Former seriously religious people are more likely to be atheist than agnostic, they're also more likely to have a stance as atheist or agnostic, rather than just irreligious.
Quite obviously they have deeper theological views/knowledge, because they held/had a lot of them as Christians, and had to put in a lot of effort into dropping or relearning new things in the deconversion process
Openness is also a factor that contributes to this. A highly curious non religious perso who wasn't deeply religious can choose to learn a lot of theological arguments after becoming consciously irreligious.
For the person who was deeply religious though, it's usually not a function of choice. You have to either learn, or come up with arguments to convince yourself your previous strongly held beliefs were wrong
Another closely related distinction is that formerly religious people are more likely to have a problem with religion itself than with religious people. Since they were seriously religious and are no longer so, they believe that regardless of its practitioners, religion itself is
problematic, and shouldn't exist. For them, problematic religious people are not the cause of religious problems, but the consequence, or just random distribution noise.
Not sure I am expressing this well, but former seriously religious people usually feel strongly about their atheism, because deconversion is an emotionally traumatic process that changes you for life.
Another reach take. Women are more likely to be number one, and men number 2.