im surprised no one brought up your comment about buds getting spongy when you jar them. This is a very clear sign that you are jarring too soon and will absolutely screw up your taste and smell. If your buds do that when jarring, immediately pull them back out to dry more. 8 weeks may be early, but not necessarily crazy early. Shouldnt taste horrible at 8 weeks. Your pics at first glance look covered in white hairs, but i think thats just the lighting and reflection of trichs. Or was there actually a lot of white pistils?
Could also definitely be genetics. when i started growing again about 8 months ago, my first few strains were ok, but i just wasnt getting good phenos and the smell/taste was as you describe. You would think when ordering seeds for killer strains, you should get killer bud with some slight pheno variation, but i found this to be far from the case. You can end up with a lot of bunk phenos and only a good one here and there. This last run that im about to harvest, my luck finally turned around and i got 2 amazing phenos out of 4 plants that are loaded with trichs and smell/taste like candy. The stuff i tasted was clipped at 6 weeks and was obviously not done but still amazing taste and smell.
Im pretty sure you are jarring too soon, but genetics could also be involved