And the shard has learned from him. The next host (maybe even in the next cycle will use what was learned that way. If that host ever had the chance to reach infinite energy, than sooner of later that shard will reach it. If not, then the whole thought experiment was useless from the start. Because the global status quo is the only thing worth talking about. The shards do not care for individual hosts. The care for the species. Because really... the host isn't that important. Someone else with the same shard could have developed the same tricks or tactics. Or do you think that Skitter is unique, that no one else in all the planets would ever come up with the same ideas?
What i am saying is that a cape, a tinker, in such a territory that is like No Man's Land Gotham or gang-war Brockton bay, will not focus on building a Arc Reactor stealing tech as it would reveal his existence to enemies, specially with Thinkers around.
He will build weapons, armor, repair them and upgrade them, maybe put one or two pieces in storage to make something better later on, but what you forgot, is that tinker have specialities.
A tinker would have first to trigger with a good tech tree to be even able to create a simple generator, then he would have to fight, repair and upgrade his gear, maybe exchange tech, think long term and actually have a reason to create such a generator, and only then starting creating/maintain/upgrade it.
Hell, think of dragon, she was online for more than seven years, and yet did nothing of sort.
Armsmaster is the same, not only, we are talking about a broken-cycle where government tinker could work together and talk to each other;
something that would have been impossible in a Ideal cycle, as such interaction would have to be done only with physically near tinkers, as long travels are not sure in that conditions, with experienced tinkers that collected a lot of data to be rewarded by their shards, thus with broad experience and specialization, without problems to stay/work together without killing/sabotaging each other, willing to try doing something about the idea of such a generator, with enough salvage/tech/minerals/etc to create it, in a place calm enough to work.
Not only that, entities in a Ideal cycle don't want Hosts to be able to build something that threaten them, as such, a bomb to destroy their enemies using that generator? flagged as an allert, hell, it enough exotic even a gun powered that way!
And the answer to that alert are endbringers, not when the weapon is completed, but as soon as possible -> hence, the idea of the Cycle might work extremely long term, but they are unknowly sabotaging it trying to make it more efficient