Was ready to buy this until I saw it is a subscription, not stand-alone.
Several apps on the Mac App Store have both subscription and lifetime pricing. I’ve bought several.
¹ I don’t want to become a networking expert and babysit everything. I already practice good security regarding what I install and run, I just want a little more control.
² And if it was a bother for me, there’s zero chance any of my non-technical friends would last an hour.
This is actually what I did last time I used Little Snitch, it helped a lot. When I installed a new app I'd use it for a bit, then review in LS and see what it was doing. From there I could allow or disallow whatever I needed.
It's sort of the reverse of "block everything until allowed"