I'm not sure how your conclusion follows - it's undoubtedly true that more and more folks are involved in teams that at least partly remote. However, the skills needed to manage these effectively are mostly the same as co-located teams. To whatever degree "people person" was needed, it seems mostly the same to me.
If a coworker or employee comes in to work distraught for some reason, it's far easier to reach out in person and find out that their dog got ran over/relationship broke up/parent is in the hospital. It's not impossible remote, but it's harder, on all levels. A manager that has strong in-person skills but is weaker on digital communication skills may result in poorer outcomes all around.
(I'm pro WFH but pretending it's the same just seems foolish to me.)
I guess I don't buy the idea that there is such a strong dichotomy between in-person communication skills and digital communication skills.
Sure, there are adjustments to new needs and technologies. But fundamentally, that's the easy part, I think. Communication skills are needed, and they mostly transition well. I find it plausible there are some people who don't make the transition well (in either direction) but that hardly points to a paradigm change.
Do you really think there is a big pool of people who would be effective at these roles if they just didn't need to communicate in person? Doesn't match my experience at all. Certainly agree that people are stronger or weaker on various types of communication, but in my experience that is definitely a 2nd order effect, compared to whether or not they are skilled communicators at all.
I totally agree that all of this stuff is harder remote, but if anything that leans harder on communication skills.
We are an adaptive species ... just because some folks are strong in-person (due to years of experience at it), doesn't mean they won't adapt to have better digital communication skills when it becomes a more prevalent practice. I think people will be fine ... even if there's an adjustment period :)