What makes the question in the OP interesting is something that I’ve always wondered about: the emphasis on Faith. Faith seems (to me, at least) to be not that far from gullibility, and gullibility greatly facilitates deceit. So why would faith be such a requirement in a religion where being deceived is the thing to avoid? Seems like a paradigm for disaster.
I think a lot of people have got side-tracked from the original point of the OP.(even if it was worded badly)
The question was not (in my eyes) challenging the idea that somehow Christians don’t think critically, analyse or ponder. The question was, do the people who don’t spend any time wondering or searching for answers, or even understanding the faith they profess to have, still go to Heaven?
There are plenty of non-Christians who don’t apply critical thinking, but are just content to float through existence without challenging their perceptions or ideals. Many people don’t want to commit to learning anything beyond what is needed to get from day to day.
The same applies for those who profess to being Christians. I know plenty of (so called) Christians (most my family included) who understand little of what they say they believe, never challenge or question what they were taught in Sunday School or in sermons, never apply critical thinking to their ideals. They never consider the possibility of other faiths, other interpretations or other religions.
Some here say it is better to challenge and ponder, as it will inevitably strengthen your faith and provide you with a deeper relationship with your God.
But this is not true for everyone. Some people are happy not knowing all the details. You could call it ignorance, or call it lack interest.
But if God left those who didn’t ever question Him (or his existence) out of Heaven, there’s going to be an awful lot of space left for those who do find themselves there.