Nowhere does that article state there is no reason to lockdown or that lockdowns have little effect.
A lockdown is simply a series of usually legally enforced restrictions on human interaction. By definition they work, because we know without doubt that Covid spreads more when people interact and mix more.
That article is suggesting that it’s likely Germans were already taking measures themselves to restrict social contact without a government mandated lockdown. That is not the same as what you’re saying. The authors explicitly say they’re not saying what you are saying.
Based on the past 18 months you’d have to be pretty daft to think lockdowns in the UK for example didn’t work or had “little impact”.
It is the same as what I am saying. The authors merely distanced themselves from making political statements.
I am not saying lockdowns in the last 18 months were all useless. I am saying locking down now has little effect other than further depressing folk. Backed up by that study, which says that locking down recently has not proven to have had an effect on already-downward trends (i.e. the virus doing its thing).
Let's get everything back to normal now. the summer is a great opportunity for it, to lift people up again. For those worried, you may continue social-distancing, locking-down, wearing masks etc.
By the time autumn comes with its typical flu/cold season, most adults will have presumably been vaccinated against Covid, thereby hugely reducing the chances of an Autumn hospital-wave (which would threaten more lockdowns).
There comes a point when we have to turn society back on. As our model we may look to certain States in USA like Texas & Florida, who have turned back on quite successfully, even with cancelling mask mandates and the like.