Topic templates aren’t particularly effective in my experience – they are certainly no magic bullet. The type of people you would want to read them, rarely do, and for those that know what they are doing, they get in the way.
I would only do this if there are certain very mandatory things you need in each topic, like serial number or something.
I get your point, the many who feel disturbed by such a template will just ctrl+a&del the content. I do that sometimes as well, when the structure doesn‘t fit.
I know too little about this community til now. From reading threads I‘d say you do not really need it, as this platform has a totally different conversation “flow” and is more a chat than issue discussions. I love to hear what others think, and won‘t be sad if you do not apply it
Still, I hope such a template helps others who might have been looking into the same for their setup. It took me quite a while to find the perfect template for github, you likely have only one shot amongst established readers