Did they discontinue it or is it a supply issue?
No idea. Amazon says "currently unavailable, we don't know when or if this product will be back in stock". Quadratec says "no longer available", and 4WP says "product discontinued".
https://www.amazon.com/dp/B000FQ7Y6W/?tag=wranglerorg-20
https://www.quadratec.com/products/91109_100_07.htmhttps://www.4wheelparts.com/p/clove...age-bag-10st9100-10-st-9100/_/R-GNHF-10ST9100
It's not just the TJ product either, it seems to be everything. Makes me wonder if they had supply interruptions due to COVID and ended up just shutting down permanently.