I think the best way for Joe to do shoddy work is to build a robot to do it for him. Bonus points if it looks like pre-Forge Joe and can take his place for social events. Let him control it with his implants but give it a mediocrity filter.
"Hey Joe, what are you working on?"
"Oh, Hi Aisha. I figured I'd make a couple of little decoy bombs and grenades in Bakuda's style with little trackers or cameras inside, so I could sneak them onto her troops and get better info for the legal processing of the ABB's upper echelons, but I just can't replicate the rustic look she uses, and my perks keep making my welding too smooth to blend in with her line styles. I'm trying to emulate a copy of her power onto a little droid I've built, but it keeps indirectly borrowing my crafting powers and making things too miniaturised or modular. I figure I'll just start stripping back the limbs or sensors until it doesn't count as an extension of my crafting ability anymore, and hopefully I'll hit the sweet spot before it can't operate."
"Joe. Let me get this straight. You are trying to make spy devices that look like the city's most imposing villainous tinker's work, but you're so good you can't even fool people into thinking you're as bad at tinkering as she is."
"Well, not exactly, it's more-"
"And because you can't do such a terrible job even under duress, you decided to
emulate her entire brain and personality in a robot body, as a
side project, and even that was such a good job that it can't pretend to be as bad at tinkering as she is?"
"I mean, technically it's not a real personality emulation because it doesn't have personhood, it's more like a hammer with autocomplete-"
"And now your only hope of disguising your tech as hers is to remove its eyes and limbs until it is left with just enough to mimic the most cutting edge technology that what is currently the top sixth highest-ranked threat on the Eastern seaboard can make with the funding of an entire gang, and yet still cram inside what are likely to be cameras and recording devices far beyond what she could dream of creating?"
"Well, I thought removing the multitools would be enough, but Bakubot just clanged its shoulder joints against the scrap metal sections until it had a proper thermobaric cluster grenade, and it was too small to be an original piece. I think maybe it's still getting some sort of heat data from the friction in its little treads? Hey, do you think it could still compensate for force feedback if i set up some kind of randomised mass field in the building area, I could probably whip up some-"
"For God's sake Joe, stop trying to find new ways to bring the poor robot down to her level and just build some kind of hologram that makes the grenades look terrible even when they're actually good."
"I- huh, actually that's pretty smart. Let me drop Bakubot off in the Laboratorium real fast so she can join the research team, and then I'll be right out with your new particle cannon attachment for your wristwatch."
"A particle what?!"
"Well, the nanoforge was idling and I had to design
something whilst you were so busy interrupting me."