You should absolutely complain about these things to the relevant companies.
Keep in mind that not updating is still a losing situation, because you’ll miss out on patches to critical security flaws (which allow remote code execution without user input).
Both Firefox and Chrome have fixed such vulnerabilities within the past week:
Attackers were able to confuse the parent process into leaking handles into unpriviled child processes leading to a sandbox escape.
The original vulnerability was being exploited in the wild.
If a Windows PC user with the Google Chrome browser (or any other browser based on the Chromium engine) clicks them, their computer gets infected with no additional action required from the victim’s side.