The TV deal is about the money that all the teams get. The difference between teams will increase.
Even if you finish top of the division next year, the teams in the premier will have had twice as much money from the deal as you.
if you don't finish top, then premier teams and higher placed teams will get more money for longer.
You might also notice fewer home games and more away ones get covered when you are one of the bigger clubs in your division.
It should be obvious that more money is better for scottish football as a whole.
It seems obvious to me that the benefits of more money would be increased for all if the additional money was split progressively.
What isn't immediately obvious, and is the point that I'm trying to make above, is that an increase in money for all clubs will tend to reduce the chances of any given club improving. Inequality will increase. Mobility will decrease.
Only thinking about the sum, and not the structure, is dense.