I agree with the general sentiment, but: I have two small kids and I spend a lot of time just dealing with the chaos that results having no preschool, and then I have to work because, yes we're all in the same boat, but many people either don't have kids or have older kids, or have been in lock for a shorter period of time than where I live (schools here are closed since 23 feb).
On top of that I'm a bit workaholic too, and I'm having trouble letting go some projects dear to my heart. The net effect is that the my levels of stress have really gone up. Yes, in the evenings I do feel blessed I have a nice family and I have a general feeling of happiness resulting from it, but I think I had that before the lockdown too (I think? how can I know ... it feels like ages ago)
EDIT: I was working from home already; I now realize I was taking for granted things like lunches with the family
The stress level even goes up if someone from your family is ill or getting ill (anything non-Covid19, like still the majority of illnesses among broad population) and may be in need of medical assistance. Also, all the folks who are working in "system-relevant" jobs are under extremely heavy load, some of them facing inconceivable situations. So yes, if you are in the lucky situation that the lockdown is giving you unprecedented possibilities of self-improvement, lucky you and make the best out of it! But I am wondering how much is the percentage of those lucky people currently?
EDIT: I was working from home already; I now realize I was taking for granted things like lunches with the family