@cuthbert51 said in Why Is Opera Allowed To Be So Intrusive On Install?:
When I installed Opera 60, on a system that has Chrome installed, as well as other browsers, it automatically made itself the default browser without asking, it brought in all my bookmarks without asking, my logins and passwords without asking, and it pinned itself to my Win 10 taskbar without asking.
Opera like's to focus on and prioritize newbie users that want everything done for them automatically. It can be annoying, but it is what it is. Opera also likes to make "options" in the installer very subtle so newbie users don't mess with things. Sucks for the rest of is, but again, it is what it is.
To avoid spyware, malware, viruses and unwanted programs, whenever you install something, you should always look for, read and adjust advanced options. If you get into the habit of doing that, you won't get burned by such options in browser installers.
As for the option to not pin when installing or not launch Opera when installing, see https://www.reddit.com/r/operabrowser/comments/9snae4/installer_command_line_switches/ for command line options.