Not certain it is fair to say 'just like Dish' as the parallel isn't particularly accurate other than "debt". Dish bought a lot of spectrum on the card. But they also were trying to build out something new, create something. Dish's underlying Sat model is sunsetting due to the market, not because they can't afford the interest payments. Dish is trying to transition to remain a viable corporation... via a lot of debt.
Sinclair bought up stuff that already existed to supplement with gambling (without researching it at all it seems), tried to shutter a few of the smaller markets, and were on the verge of bringing down the companies they bought on leverage. What Sinclair did is more like what private equity have done with Toys R Us, where a profitable company was rendered "unprofitable" as the costs to purchase it, sunk it.