I'll admit I could still come around on Swing High, Swing Low. But I do think I like the lyrics better on Take Now My Soul. It's kind of a poignant look at a more concrete, real-life scenario, while Swing High, Swing Low feels a little vague (which isn't inherently bad, but here the more specific lyrics are good). And I like the flow of some of the lines in TNMS better, including the title line and "all the bootstrap people fled in tears."
I'll add that while topical lyrics often tend to age poorly (e.g. DT's The Great Debate), I sort of doubt that's as likely to be the case with songs about COVID-19. This is such a major and often traumatic event in the lives of everyone living through this period that it's not just going to fade into hazy memory within a few years the way a song criticizing a particular public figure or discussing a specific political controversy from the early 2000s might. Now, if someone did a song talking in weirdly specific terms about COVID-19, like with specific references to Anthony Fauci and New York nursing homes and AstraZeneca vaccines or something, then those could age poorly because people are going to forget the specific references. But a song like Take Now My Soul, which is devoid of overly specific references and focused instead on the experience of living through this time, is going to age just fine, in my opinion.
I compare it to songs about 9/11. That was a traumatic event in the lives of most people who were alive and old enough to be aware of it. A lot of songs came out of it, and I guess some of them may not have aged so well (probably any that made very specific references to concrete events that happened in the months right after it), but I think most of them did. To take the one we all know, I think Sacrificed Sons aged just fine. It focuses on the experience of witnessing that event and the big-picture soul-searching a lot of people probably did in the aftermath. It's even to the point where I can connect with that song in a very serious way even though (and I'm revealing my youth here and probably making a lot of people feel old) I was too young to really get what was going when 9/11 happened (I was aware of it in the sense that I was loosely aware that "some bad guys flew airplanes into buildings" and that a lot of people were killed and a lot of people were scared, but I was way too young—and fortunately not directly enough affected—to really feel the significance and impact of it).
Edit: To be clear, I'm not trying to make a direct comparison between these two events in terms of the level of badness. Don't want to debate that. Just that both caused significant trauma to a lot of people, probably the majority of people in certain countries, and had major impacts on the lives of most people in those countries over a long period of time.
(By the way, Marc, thanks for the PM you sent me. I couldn't respond directly because your inbox is full.)