For once, I have to be devils advocate:
Yes crafting was useless since A18
BUT that was not because T6 couldn't be crafted. It shouldn't be craftable. It should be a lucky find. A 1/1000. A special moment.
What made it useless was the absolute abundance of weapons.
So that you already had every weapon T5 before you could even hope to craft it at that level.
If they finally adjusted it WAY down (like they promised and said in the patchnotes), crafting will be worth it, because you will not find a lot of weapons anymore.
So if you want a certain weapon, you either have to be lucky or craft it yourself from parts (which come from worse tiers)
So T1 is relatively widely spread. You can use it for the early game and scrap it lateron for parts.
T2 is a good chance but you can craft it if you are impatient.
T3/4 you should just craft yourself and hope that in like... 30 days you might find one that is slightly better than what you crafted.
This would be the ideal balancing to make crafting useful while still requireing you to go out and loot.
BUT (I haven't tried it, just based on 8 years of experience with TFPs) this is probably just wishful thinking and they just lowered weapons overall by like 20% instead of finetuning it. Because balancing is for the time "when the game goes gold"!