I think increasing post count is a minimal factor in cases like these.
Posts boosts activity score, which is what is important, and one can only get as much as 14 every fortnight. Hence at a rate of 1 post per day, full activity for that period would be achieved. Also, for one to lose them, they would have to delete all posts made within two weeks. Except one is not active on the forum, it would be easy to avoid losing activity.
There are of course users who simply apply in campaign threads, and may need the extra posts to increase their total number, but they would also need merits for the activity to count. And it would be difficult to get them by posting in only such threads.
I would assume that in almost all of such cases the user forgot to delete their replies or never planned on making the effort to do so.
Even though these are almost two identical posts. Apparently there is some value in them, only I did not understand what
On the surface the first case offers no content and the mods would need to check the unedited version using LoyceV's script, this would take a lot of time, and would matter little as it's currently off topic and low value.
In the other case, it is possible to see the original content which is an application through the strike through, and it is posted in an appropriate thread. The mods likely give the posters the benefit of the doubt by leaving such replies.