Thing is, that means someone else's kid misses out on that 'independent time', which maybe their kid would very much benefit from too.
At least with doing it occasionally, the kids get independence and also understand that everyone else's parent does the same at least once, so its not a big deal and no one else is picked on for their parents always being there. That way its fair too.
Its normalised as being a community club, where you learn independence, you spend time with a parent, you spend time your friends and you learn about their family a bit... In doing so you learn about different people and different adults in what is (hopefully) a safe environment. Its about learning about that contribution stuff and seeing parents give back.
When we talk about a loss of community, you also need to join the dots up a bit. Unless kids see roll models in their parents and friends parents doing it as a matter of course and 'just something everyone does', then it definitely won't have a future. If you miss that idea, you really are missing a lot of the point.
Its the whole package not a club where you just grunt at other parents at drop off/pick up.
If you can manage to convey that message and get parents to buy into it, thats when it does work. The hard work is forcing a shift in that mentality that you just drop off the kids every week.
I think there is a mentality that people go to work, come home from work, shut the door and close themselves off from the rest of the world. And by the same token, kids join a club and you drop and run and don't think any more of it. Except thats just not Scouting.
Unless you get the community aspect to Scouting, and there's that culture surrounding it and supporting it from all parents of course its doomed to fail. The idea of 'paying someone' to run is a symptom of the problem not a possible solution.
It encapsulates 'it takes a whole village to raise a child' spirit. Thats doesn't come from nowhere. Leaders and parents have to BOTH understand that and generate it.
It can and does still work, if done right and everyone is made aware of thats how it works and signs up to it on that understanding.