The deleted posts metric has long since been weaponized.

Theymos should always do an in depth investigation before applying blanket rules and actions to this gamed nonsense.
I have seen this before. A member upsets another and they will try to weaponized the " deleted posts / certain timeframe " metric

Everything on this forum that can be gamed and manipulated will be gamed and manipulated.

The moderators in most cases are just reacting to reports. However 100% there has been some undeniably and biased moderation here in meta previously.

This seems to have improved hugely recently.specifically in meta.

I would recommend the forum only accepts reports on posts older than 2 yrs old if it is  serious or scammy. If you get reports marked bad on posts older than 2yrs old in future because they are not serious then you get a warning. 
These petty snitchers for personal retribution need to be taken care of. Wasting valuable mod time paid for from board resources for their petty personal gripes.

It is best to document all of your deleted posts that are clearly incorrectly deleted.
In this case they seem valid deletes as per the rules but still these kinds of years old posts should be kept apart from any consideration for a ban based on deleted posts / specific time frame rule theymos has.

On this occasion fault is with the weasel snitchy reporter not the mod. This will be either moronbozo or suchmoron or one of the gang that does not fully appreciate the new lauda quicksellout7 69er taking place.

Without seeing the posts it is impossible to know if any useful information was lost.