I am inclinded to think that actually it doesnt really matter because we have plenty of time to consider whether anything we might take from their post is useful and whether we dare use it in the real world.
I think it does matter.
I think the main reason why most of us more "higher-hour" pilots post on these forums is not as a chest beating exercise; it is done to help out others.
Other smaller reasons will be stuff like looking for info, etc. Or just boredom / distraction from work
It is important to be reasonably sure that somebody claiming to have done something has actually done it, because unless you have also done the same yourself you can't tell whether the info is accurate or not.