Whatever works for you, champ. But keep in mind, your reg is disposable, too, just like even the best shears: eventually, wear, tear, and the saltwater win. What you do is maintain and inspect your gear and replace it before failure becomes an issue. My TyTek SS shears (with a SS rivet) cost about $5 a pop and are both disposable and reliable…probably why they're commonly used in combat trauma kits. The primary failure on them is when the relatively hardened blades snap because I dropped something on them; never had a rivet or the handles give out on them, unlike the ti-coated things a lot of SCUBA shears kits come with.
The idea that a Tekna will cut wire leader "when sufficient force is applied" is a joke, and if you'd tried it under real-world conditions (say, with a goddamn saltwater fishing hook in you) you'd understand that. It's a nice piece of steel with decent blade geometry - not a
ing lightsaber. The necessary degree of force (not small) you have to apply
towards the wire you seek to cut must be countered with an equal degree of force on the wire in the opposite direction…messy, and given to a dramatic gesture of one hand out and one hand in should the wire actually give way. The shears neatly balance those necessary opposing forces by design…they're simply the better tool for the task, just like the knife is the superior tool for thick rope or tightly-wrapped heavy fishing line.
If you think carrying one sub-optimal tool makes you "an actual minimalist", you're not much different than a guy carrying double 130s of air for a deco dive when an h-valved HP80 and a 30 of O2 would get the job done as well or better.
P.S. We're in agreement on how silly the DIR sawed off steak knife idea is. They're really crappy edges barely held in place by some hard-molded plastic. May as well buy a crappy Chinese dive knife