Actually, there's no reasonable pathway for crystal healing to help here. On the other hand, it's entirely plausible and there's real-world experience to support (1) masks filtering harmful particles and (2) hydroxychloroquin being useful against an immune system run amuck, which is the way 'flu' often injures patients. So, no, only two of the three were similar.

Zero credit to those who would equate all three or who would dismiss either of the latter two without diligent, unbiased investigation and solid empirical evidence.