The 'average' home/SoHo user generally has very little experience and is a consumer of services.but for the average home / SoHo user, the former isn't relevant, and the latter should be obvious,
However, the average home user with a family that relies on access controls for web destinations should be interested: if DoH is being used and enables a way that circumvents these mechanisms. Plus these mechanisms would also have to use DoH/DoT too: once the client device has their securely-got-IP, the mechanism will have to inspect the request for the payload's URL, and reverse DNS the packet's dst IP, otherwise any hiding will be exposed via traditional DNS.
DoH isn't going to that much of an issue with most businesses. There're already proxy services, whether onsite or cloud, that will enforce use of intermediate SSL certificates for internal users. These then facilitate the proxy inspecting any and all requests. Doing this requires quite a bit of oomph hardware-wise but it'll have to become commonplace.