Reading is hard ?
The "belief/opinion" on which atheism is based is about "informed conclusion" : there is no concrete evidence and no reason to think it exists, so it doesn't exist until further notice.
The "belief/opinion" on which "believing in God" is based is about "personal faith" : it's about deeply believing that something without evidence exists. That's the entire point of "faith", that you dispense with concrete evidence.
Personal experiences are important for forming a, well, personal opinion about something. They are worth little when it comes to concrete evidences, especially for anything that is about belief considering how our brains have built-in functions which are all about "how to make the whole thing runs despite whatever happens outside".
That's the entire point of the post, and you seem to happily stroll past it without getting it.
Okay, so trying again.
Let's use a sociopath for an example. This individual, for whatever reason, is incapable of feeling a particular set of emotions. They could very easily reach an "informed conclusion" that these emotions don't exist. The only "evidence" that can be presented on the matter is, after all, just reported personal experiences from other people and thus not "concrete." Yet even the sociopath will usually accept that such emotions do in fact exist. While they have no concrete evidence, or experience of their own, the commonality of experience as widely reported is not ignored out of hand.
Similarly, you operate from the assumption that people who believe in god are "dispensing with concrete evidence." Yet in many cases they are actually basing their belief on personal experience. Their personal experience may not be concrete evidence
to you, and there is no reason that it should be. But depending upon who they are their personal experience may be evidence
to me, or to someone else. And again, a commonality of experience as widely reported is not usually something that should be ignored out of hand.
Which brings us back to the atheist proselytizer. They also have no evidence to support their position. In fact, with surprising regularity they will happily acknowledge that their chosen position, as a negative, is logically beyond proof...using the fact that it is beyond proof to cheerfully account for the fact that they have no proof but believe in the correctness of their position anyway, and insist most strenuously that their position be adopted by all...except those who are "too stupid," of course...or find reading hard maybe.