[3] From 2005 to 2006, he was an advisor to Minister of Health Žilvinas Padaiga, who represented the Labour Party in the Brazauskas Cabinet II.

[3] He has authored over 40 scientific articles and has been awarded the Cross of Officer of the Order of the Lithuanian Grand Duke Gediminas.

[citation needed] On 18 September 2021, speaking in a protest organized by Astra Genovaitė Astrauskaitė in Vilnius, he stated that "vaccinating children is a crime.

[1] He has been accused of pro-Russian views by other anti-establishment and Eurosceptic leaders, such as Nida Vasiliauskaitė, who claimed that he intends to "turn Lithuania into a Russian protectorate".

[11] On 6 September 2023, he announced his run for President of Lithuania, stating that he intends to establish a "dictatorship of law" and unveil agents of foreign intelligence services in the Lithuanian government.

[15] Vaitkus expressed nostalgic views towards the Cold War period due to a perceived balance of safety and security between the world superpowers.

[18] Vaitkus has also claimed, without providing evidence, that Lithuanian presidents Dalia Grybauskaitė and Gitanas Nausėda were trying to start a war with Russia.