Where I live, for a large part of this past year, parks and other public outdoor spaces were straight up closed. All outdoor activies were discouraged for much of that time, too, and contact with people outside your household was forbidden. Schooling has all been online (in person school is starting in some schools in my area next week, and even that is only a couple half days a week), so there's no school playgrounds, either. For people who don't have their own yard, there really weren't many options for actually getting out of the house, especially for kids.

Of course many people ignored these regulations, but while the LW seems like a dick in other regards, it doesn't seem at all unbelievable that he is simply stating facts here, if they live somewhere with similarly strict covid regulations.