The issue is there's not a whole lot of technique in the show in the first place. Only Roshi and Goku have abilities that aren't just beams or balls of energy. They've been trying to put more in, but the main cast needs to get some of that love too--and not just Goku.
I think it's actually been pretty good this arc in terms of fighters demonstrating technique/fighting intelligently. I don't want to list a bunch of examples, but one that really stood out to me was 17 baiting the wolf lady into a jump (thus negating her speed advantage) and counterattacking from the light.
I was also impressed with Frost immediately incorporating the Mafuba, a technique he saw for the first time, into his plan to take down Vegeta. Specifically, he figures out the type of opponent Roshi would use it against, how to bait the attack out, how to redirect it, and how the sealing works. It's pretty clever despite the ultimate failure of his plan.
So I think the show is definitely getting better about this in general, and this is pretty specifically a Gohan issue.
