Considering desert wolf is a community manager and storm 8 staffer, I would consider his advice reasonably correct. I posted previously about my fb seed collection from the fully upgraded respite. 3 in about a month, with the 3rd dropping yesterday after the new quest started. Very slow indeed. My respite normally gives me petals that I don't need. I would consider the fb seeds very random drops. However, you don't actually need them.
I think the problem is that when everyone got the new update, they bought the greenhouse straight away. The only option in the greenhouse at that time was the one with the fb seeds. So everyone went searching and looking for something with an old blurb, now defunct, if you have moved on, and what you were looking for you don't really need.
Now that my greenhouse if fully opened (to the extent for this bit), this recipe is now showing at the bottom. All other recipes do not need the fb seeds, they need the pile of seeds to move on.
Cleaver of TL. 2 things, very similar names, old blurbs for items. Me thinks, they think, spend gems for energy, to get something that you don't need, until you realise too late.
Lucky for me, I didn't fall into that trap. Cheers