No, I entirely understand your position, having been a forum moderator in the past myself. As such, I am 'not' advocating for the removal of that lock, simply an increase in its limit.

Another argument upon that thread you linked was that I could return later on and reply, and that this is not a networking site.

Very well, I will agree with that; this site is not for networking.

What is the purpose of this site though? Is it not for the sharing and commenting of images?

Besides which, as much as I do like this site, and the people to be found upon it, I simply may not get the chance to come back in a later hour to respond to a conversation, that may very well be dead by then.