its way easier, and plants usually only look half dead if you dont do a DSM correctly, which frankly its hard to mess up.
the perks of dry start:
-low chance of algea, or mold unless you have too much water (which you can suck out with a small syringe)
-free co2, when you cover the top with a glass lid or saran wrap (which i personally prefer) it traps it in there, sometimes it helps to poke a hole or two, i actually blow into it a few times a day and to be honest i think it makes a difference
-for plants that need rooting so they dont float, or become unrooted by fish or water movement this method is perfect, especially for baby tears, glosso, moss, ect. so they can fill in their roots, keep ground, and after flooding just need a little triming
-can keep the lights on longer, promoting more growth
-time, it takes a little bit of patience, but its worth it in the long run
-algea when flooded, which doesnt occur most of the time, but you can have some with high light and low co2
all in all its super easy, cost efficient, just put in substrate, plant little seperated bunches or single stems, mist with a spray bottle or mister ( i use water from a very well filtered tank, i prefer it over tap water, but whatever floats your boat) i keep a suction cup old school thermometer so i can moniter my heat from the lights and to find out how high i need to hang them, then just throw on some saran wrap, tape it down to create the seal for moister....... and your done, i mist my DSM tanks about every 2 days, sometimes three, just make sure to keep the water level right below the surface i find that is the easiest way
a little tip, try to get plants already emersed so they dont have to go through a change from submersed to emersed, but ive done it both ways and its not a HUGE difference, but you will usually have the submersed die off a little..
good luck, if your new i highly suggest the DSM instead of messing with co2 setup and new tank algea and cycling blah blah blah just search threads read a little and try it out for yourself, i think you will come to like it
with best regards