Amateur typesetting enthusiast.
In order to make a change to the rules and tradition of anything, easy or not, it must be justified. Is there any reason to change the colors or rules concerning which player opens?
It would be prudent to mention these are Gemini protocol browsers, and don’t support HTTP. Great programs though, I use them too.
Opt-in seems like a reasonable position for this optional feature. Not everyone uses it. I don’t. To turn the question on its head:
Is there a compelling reason to enable it by default?
The comments you highlighted were some of the most bizarre things argued in the whole thread. Apparently copyleft just isn’t permissive enough for some people. Your counters are good!
I can understand giving up on FreeBSD–OpenBSD at least offers to install & configure a graphical environment with a graphical login screen during the installation process, which makes it much easier to get up and running for desktop or laptop use (on supported hardware).