NuBSG started 16 years ago and ended 10 years ago. His execution of NuBSG didn't make it a ratings hit for SyFy for long, and they kept it going because a few high profile critics liked the show and TPTB at SyFy thought that would give the channel some Cred in the cable wars back then.The guy created Battlestar Galatica. He understands modern tv. He also understands Trek. He would be a perfect fit. Jason
Since then he's done the Outlander series for showtime - and I guess it has a niche following (not my cup of tea).
As for "knowing modern TV..." - hardly. Hell, one of the biggest issues with his execution of nuBSG was the added intro line of "and they have a plan..." just because it sounded cool; but when it came to the execution of the series RDM really DIDN'T have a plan and that became so obvious to anyone watching; he finally admitted what I've related above and then the writers tried to retcon 'The Plan' in.

As for the "Trek RDM knows..." - that version of Trek is dead and gone; and I rather not see it make a resurgence. The B&B era is thankfully dead, and it should remain so. (IMO).