Reading on PPRuNe is kinda like life, but without you parents holding your hand while you do it. Like any person you could meet, your respect will ultimately be earned by their consistent credibility. When you come to know then as credible, by your measure, you will trust who they are, and what they say.
Every poster here has the opportunity to grow their credibility with the group, by posting well and honestly. Every reader must learn to understand what they are reading. I admit to following with some interest the informative posts of a now long gone poster here, to read some time later that they had proudly just flown their first solo. But, they never had claimed experience, it was my assumption. I learned to be more selective.
In the mean time, can you imagine the workload of confirming each poster's experience inside the PPRuNe system?