[2] A strong Quebec nationalist, known for his conservative views and criticism of the anglophone community,[3] he’s published 153 opinion columns in the Le Journal de Montréal as of 2020.

After his return from Bosnia and Herzegovina in August 1994, he published a long report on the humanitarian aspect of the Canadian forces in La Presse.

Gilles Proulx has said that his colourful radio hosting style was inspired by Adrian Cronauer, played by Robin Williams in the film Good Morning, Vietnam.

On March 15, 2007, while he was undergoing a routine medical examination at the Montreal Heart Institute, doctors determined that a Coronary artery bypass surgery was necessary.

Beginning in late 2009, he hosted a television series known as "Mémoire de Proulx" on Canal VOX in Montreal, which was rebroadcast on other stations across Quebec.

[6] In March 2023, he was strongly criticized by the Quebec political class for having made, during a column on Qub Radio, violent and hateful remarks against the Québec solidaire MNAs.