Nature Rules! Why then Tailgate in a bad Weather??

If you don't have enough space to safely drive at 55 mph in conditions like that, then the obvious answer is to adjust your speed for available following distance. We do this all the time on dry pavement in heavy traffic, it should be more important to do this in poor road conditions.

Unfortunately many truckers do seem to have the attitude that they are good enough to drive 55 mph in bad conditions, therefore they must drive 55 mph in poor conditions even if there is traffic. This is a recipe to create a "Cluster Truck" as shown in the picture of the OP. Far better to hang back behind a cluster of trucks in conditions like that and let them either sort it out so you can safely pass the slow truck with good following distances, or be far enough behind them to come to a safe stop if they all pile up in a wreck.

Pushing the issue in poor conditions by tail gating is going to gain you a very small return for the risk you are taking.