Additionally, my mom has been complaining about the landscapers where she lives and is angry that they're still allowed, because they flagrantly violate social distancing and get near her when she's trying to go on walks around her neighborhood.
Things are getting so bad in Detroit that bodies are piling up in unrefrigerated rooms in hospitals. Now's not really the time to be questioning if they're being too strict with the social distancing; at this point they really just do need everyone staying home, period, and not coming into contact with anyone. Motorboats and jet skis sure as hell aren't essential, and might tempt people into congregating with people they shouldn't be congregating with (boating is typically a social endeavor for example).
As for bodies piling up in Detroit... While that's true, additional restrictions added today won't have any impact there. Either the previous restrictions were sufficient, in which case Detroit should be peaking soon, or they weren't sufficient and there'll be several times that number of bodies before these restrictions start to have an effect.
My personal view is that low-risk activities should be allowed whenever possible to maximize the time period that people will willingly endure these restrictions. It looks like this won't be a sprint but a marathon, and people's willingness to comply is extremely relevant there.
Gradually increasing pressure has been the approach. It feels to me like you're right. I am willing to accept more pressure, though already burdened. It's because there's been time to adjust.
The very earliest that it makes sense to even start considering reducing the restrictions is once the healthcare system is back to operating at under its maximum capacity. And you have to ease things back slowly, ready to clamp back down if necessary if the healthcare system seems ready to be overwhelmed again.
Every incremental improvement you can do to decrease the R_0 will have its effect. Progressively stricter social distancing measures as required absolutely will work, so long as they are being obeyed anyway.
And that's MY point. How long will people be willing to obey the current restrictions? How long would they be willing to obey even stricter ones, or more lenient ones?
I don't think obedience can be assumed forever. Even China had to weld people inside their apartment buildings. And I don't know if that would be practical here.
I have no idea how to quantify it, but social distancing at a grocery store, surrounded by an ever-rotating group of people, seems much more risky than a work-crew, which is composed of the same 6 people all day.
On the work crew, if one person gets it, basically everyone else on the crew is guaranteed to get it too. In the grocery store, a single visit, especially with proper precautions taken, is unlikely to spread it.
And the spread on a work crew is limited - there's only 6 people there. But that grocery store worker? Can you define super spreading event?
Given that we're in the early stages of the worst pandemic to hit the world in over a century, like you, I too can't bring myself to be angry about landscaping being shuttered, or jet skis, or whatever other silly unnecessary things people are complaining about. If even one more person dies because a landscaping company opened back up a month earlier, then it wasn't worth it. And that's easily a possibility we're looking at here.
People wonder why others are afraid to give the government more power, this is one of the best examples of why.
But at least you can still buy lottery tickets!