That plan would be bad for the franchise. You have to give your audience time to catch its collective breath. Oversaturation can kill the golden goose.
Oversaturation is not an issue with these series.
Picture taking them out of the Star Trek universe, and set them in none Sci Fi 2020 like regular TV shows. You have spy show, you an experimental show, you have a show that is a series of short films, a show about students going to a military academy, a comedy cartoon from the Rick and Morty guy, a TV cartoon show for kids, a show about a retiree investigating a murder, and a show about a group of explorers. Would anyone ever call that oversaturation of 2020 content? No, they'd look at you funny if you did.
See all of them are so radically different from each other, all they really have in common is they occur in the same universe, but other then the Star Trek/Sci Fi connection, they aren't really in the same genre even.
They could double the amount of shows and as long as there is no thematic overlap but they are in the same universe (or multiverse), then there will be no oversaturation any more then their is an oversaturation of shows set in the 2020's.
And the media has changed, how people consume media has changed thanks to streaming and more.