Scary spoke setup on a disc brake wheel?

Call me a fusspot but wondered if anyone else has thought about this: Knowing that with disc brakes, it’s all down to the spokes, to carry the braking forces from the rotor/hub out to the rim, I took a look at my giant defy’s 20 spoke front disc brake wheel.  It’s radially spoked on the non rotor side and cross laced on the  rotor side. I feel sure that for disc braking, radial spokes are a just a little  bit better than a hairnet in a rainstorm, as all they’d do is have a vague and spongy effect. So on my wheel, of the 10 remaining, crossed laced spokes we’re down to just the 5 forward facing spokes that I can count on for braking. Ie with the bike in the garage, when I push the bike forwards against the brake, the forward spokes go up in pitch when played like a harp whereas the back facing spokes go down in pitch. So when I’m just about to brake on a nasty downhill, should I be scared, or am I just paranoid? For the record, the rear wheel has no radial spokes, and I’d argue, why for the sake of a few saved grams, weaken things with radials on the front, where to my mind the major braking forces are. All comments and reassurances highly appreciated!