SMU is receiving money from the ACC. They are not receiving media rights money, but they are receiving other monies. I don't know how the ACCN is set up, but I would think the revenue from the network is not "media rights" money. All ACC teams are required to have production and broadcast capabilities. SMU will be producing and broadcasting content to the ACCN. I think they will receive money for that.
Clemson hasn't been publicly broadcasting trash. FSU has been framing the entire discussion about unequal revenue sharing around viewership and overall athletic budgets. If the ACC were to have uneven revenue sharing based on that, then FSU would have more money and a large budget (in part because of uneven revenue sharing) and would continue to have higher viewership (based in large part on uneven budget and which time-slots and networks they are put on). It would be a circular system in which they get stronger because of uneven revenue sharing, and then they get more revenue because they are stronger ..........
Uneven sharing based on conference wins, bowl/CFP appearances, BBall wins, tournament game appearances, etc. could be workable. Anything that immediately creates tiers would result in a top 3-4 teams that get stronger and stronger, while the rest of the conference gets weaker and weaker. The result would be that in a few years, the top 3-4 teams would be hurt by the rest of the conference being so weak. That would inevitably lead to a breakup of the conference. I would say that FSU doesn't want that, but I think that is exactly what they want. They want to get stronger so that the rest of the world can see the large gap between them and the rest of the conference that they see with their garnet colored glasses.