Malone received criticism for propagating COVID-19 misinformation, including making unsupported claims about the alleged toxicity of spike proteins generated by some COVID-19 vaccines;[6][10][22] using interviews on mass media to popularize self-medication with ivermectin;[23] and tweeting a study by others questioning vaccine safety that was later retracted.[6] He said LinkedIn suspended his account over what he claimed were posts he had made questioning the efficacy of some COVID-19 vaccines.[24] Malone has also claimed that the Pfizer–BioNTech and Moderna COVID-19 vaccines could worsen COVID-19 infections.[25]

With another researcher, Malone successfully proposed to the publishers of Frontiers in Pharmacology a special issue featuring early observational studies on existing medication used in the treatment of COVID-19, for which they recruited other guest editors, contributors, and reviewers. The journal rejected two of the papers selected: one on famotidine co-authored by Malone and another submitted by physician Pierre Kory on the use of ivermectin.[21] The publisher rejected the ivermectin paper due to what it claimed were “a series of strong, unsupported claims” which they determined did “not offer an objective nor balanced scientific contribution.”[21] Malone and most other guest editors resigned in protest in April 2021, and the special issue has been pulled from the journal's website.[21]

Malone was criticized for falsely claiming that the FDA had not granted full approval to the Pfizer vaccine in August 2021.[26]

Basically this is bullshit. I could sign that "Physician's Declaration" with the name "Dr. Ivo Robotnik".