Badges and "identification" can be bought at dollar stores.
Nobody is going to be able to check their authenticity in the middle of a firefight, and by the time you let criminals enter your house to show you their "ID", it's already too late.
That's not true. There's one bot that routinely posts to news communities called "MicroWave" and there are consistently people engaging with its posts.
It probably doesn't make much sense to mirror /r/technology to /c/technology since that community is already popular and self-sustaining on lemmy.
There are countless other 'niche' communities that have no posts for months, however. There already isn't anyone engaging in these communities and it's unlikely that that will change because nobody wants to manually make posts that next to nobody is going to see. It's cyclical.
It's really consumerism.