Yup, it can be a way of getting a discussion started
For Canada the rules are as follows:
The Standing Orders of the House of Commons require the government to respond to every petition presented to the House within 45 calendar days. If the House is not sitting on that day, the response must be presented at the next sitting of the House.
The petitioner, supporters, signatories, and the member of Parliament who authorized the online publication of the e-petition will be notified by email when the response is tabled in the House. A copy will also be found on the petitions website along with the original petition.
Yup, it can be a way of getting a discussion started
For Canada the rules are as follows:
https://www.ourcommons.ca/petitions/en/Home/AboutContent?guide=PIElectronicGuide