Yes probiotics does help with dysbiosis. But I find that lactobacteria and bifido bactera are not helpful. Only soil based microorganisms, saccharomyces boulardii and some other strains are helpful (e.g. clostridium butyricum, bacillus mesentericus, streptococcus faecalis, bacillus subtilis).
No that does not concern me. I am responsible only for the information I provide. I am not responsible for what other people do.
If others want to try bloodletting, I say go for it. Let me know the results. Just be smart about it-use aseptic technique, learn how to do it properly and safely, and dont remove excessive amounts of blood. I think its quite safe when done with reasonable precautions.