Only 3 of Weigel's own stations have it in HD, and most of the shows on it are SD upconverts, the little native HD content is limited to ads, bumpers and the Toon in with Me hosted segments that you can also get on the main MeTV channel. The few traditional providers that have it are at the mercy of how it is carried OTA in their respective markets.
If you want to watch it in HD, you'll be able to stream it on the app in a few days, along with other channels already streaming in HD that are SD only on satellite like Boomerang, PBS Kids, Nicktoons, TeenNick, LooLoo Kids, Babyfirst, Discovery Life, CNN International, Logo, BET Her, EarthX, FETV, FMC, UP, the C-SPANs, Arirang, Grit, American Crimes, Pursuit, Sportsman, the rest of the Starz Encore channels and others.
DTV satellite is in its final years, once the current fleet runs out of fuel it's most likely over unless there's a drastic change in the marketplace. Most future additions will likely be MPEG4-SD on sat and streaming in HD via the app unless it's something considered must have in HD like sports or a channel tied to a business/commercial deal. It isn't a US only thing either, the same is happening internationally with other sat providers around the world, like earlier this year Sky NZ had to jettison a bunch of channels after Optus D2 reached end of life and much of the non-sports, including all of the kids channels, are SD only. In Europe a lot of channels are SD only on satellite because most of their DTH sat providers are sharing space on 13/19/23, and Sky in the UK has a lot of channels that are only in HD via their streaming platform. Even on cable, for the past few years Xfinity has been limiting most HD additions to their X1 IP platform, while QAM users (including Tivo subscribers) are stuck with those channels in SD or not at all.