We are on 2 months raid cycle, so 2 months after winning new raid hull, it is more or less obsolete.
Let us say 2 months is 60 days, and I am not using exact figures here because my shipyard is not free to check upgrade times. So all those wanting to troll, feel free, I know there is nothing wrong with my maths even though figures are approximate.
To build a fleet of riots with flag is a 68 day build time, (yes you can get tokens in FM etc, but it is still longer build time, than the fleet remains valid for.
Here is the kicker, to upgrade to X1, requires approximately 84 days, so we are at a stage, where to get a raid fleet ready, you have 152 days worth of building/upgrades to fit in to a time period of 60 days.
I won't say that is "stupid", but I struggle to think of any other way to describe it