So the question is then who manages and oversees it? For a lot of women who are already juggling work and home life in lockdown it's a lot more extra wifework and mental load to add to their day as opposed to letting a competent cleaner back in who does what they're supposed to, when they're supposed to and to a competent level.
And notice that Owen said to Sarah that this is what 'you' should do, there was no specific mention of her partner taking on any of this wifework. Given his previous, I'm unwilling to give him the benefit of the doubt and imagine that he meant you plural, envisaging both parents taking an equal share of all labour involved in this. And even if he did, I wouldn't believe he's thought critically about how likely that would actually be to happen.
Fwiw I thought Sarah Ditum's take was a bad one too, but there's absolutely no denying Owen was doing some sexism again. And hypocrisy. It's as convenient for him and left wing men to have middle class women taking a disproportionate and hidden share of the shitwork as it is for middle class households to pay others to do it for them. If we should critically examine the latter in a pandemic, which I think is a legitimate point, we must also critically examine the former.
And suggesting it's homophobic to point out that a childfree person is childfree is a new level of self serving even for that odious man. He started off with a point worth making, then shat all over it because he couldn't possibly resist mansplaining and is unwilling to accept that the negative consequences of the course of action he advocates would affect women disproportionately.