it is definitely still a problem, the “naturalness” of the finish is irrelevant
even burning wood itself releases compounds that can be harmful (hence why we advise against breathing in smoke)
I second the idea from a separate poster that if you want to burn, seal, and add more burns-- just use a solvent to remove the seal before you do the second set of burns. Or burn it all at once before sealing
Just curious, when you say “those products are still on the shelves”, do you mean they’re selling product from the lot numbers that were recalled?
You should be able to tell the grocery store employees and have them remove it if they’re selling recalled products, but also I wouldn’t be surprised if they’re only selling products that are no longer part of those recalled lots
Edit: WAIT you said “still not on the shelves”, sorry! Ignore my comment lol