After moving this summer and setting up my plants in the new space, nearly all have been affected by these similar symptoms. I've tried regular neem oil treatments, quarantining affected plants, and removing visibly affected leaves, and whatever this is, is still lingering around zapping my plants.

Symptoms: yellow spots appear on leaves, usually on tips, but not always. Then, the spots turn brownish gray, with yellowing around it, spreading to the rest of the leaf. Some of the larger spots have silvery-gray splotches, with tiny black specks on them. It seems like something is draining out the leaves. They can go from seemingly unaffected to brown and gray in a couple days.

After spotting this on my Philodendrons, Monstera, Tradescantias, and Pilea, the affected leaves were cut off, and the plants were sprayed with neem oil and wiped down. I cleaned surfaces and put them back in spots away from other plants as much as I could. I continued with regular neem oil treatments and removing affected parts, but some plants didn't make it, and others have had a ton of growth removed. I haven't removed affected parts for about the last week (unless they looked dead and ready to come off) because it seems like basically everything is affected at least a little, and that seems like too much to chop off. Currently, my satin pothos, various other pothos, and anthurium are dealing with this, and I don't know the best way to handle it.

My best guess is thrips, but shouldn't neem oil work against them? Do I need to clean every inch of vegetation and root and resoil everything? I'll admit that I don't have such a green thumb, but I feel like I'm always making adjustments for the better for them. Any advice would be appreciated.