That's very much a last resort. These big filters are great, and last for ever, but regular draining is the thing and avoid dismantling at that joint wherever possible.
It's actually better to take the whole thing off and rinse or back flush it than dismantle, as the top joint is a b!"£$r.
The big fuel filter is like the cartridge oil filter in that getting it to re-seal when you reassemble is a problem. Cleaning, new rubber ring, all that stuff, and it still might not seal, then you try and tighten the main holding bolt that extra 1/4 turn and ... ping!
I normally suggest to other Dodge owners that they pick up complete spares of the fuel filter, oil filter, fuel pump, carb, starter, and waterpump, together with a complete set of radiator and fuel hose plus a gasket kit.
If you have all this lot on the shelf, or better still stowed on the truck, you can bet you'll never need them, but the one thing you don't have will let go some wet Sunday night miles from anywhere.