I think this is exactly how Trials should be. This is supposed to be the holy grail of Crucible. Not just anyone should be able to get to the lighthouse. If anything should be skill-based, it should be trials. Your 7/8/9-0 matches should be nightmarish, it should actually be difficult to get to the lighthouse.
If people want to pay to get carried, and you don't like that, you should be endorsing SBMM in ToO, anything to hinder that person's chances, right? And the person doing the carrying has the additional weight to carry. Sounds like a win/win situation to me.
My lighthouse game I just finished was against the #1 player on Xbox "Monay" who was playing with two people who had .57 and .72 k/d. Of course those two were 1.45 and 3.74 for the week. Basically some losers paid other people to play on their accounts to get them to the lighthouse. Like really, dude was on a 38 game winning streak at the time. How is that fair or even competitive for anyone? It's not. Trials should add SBMM so that it is a challenge for all the pro's to go flawless just the same as it would be a challenge for the average players to go flawless. Remember it's just a game and playing teams where you can't even more isn't fun for anyone.
I've always preferred that Trials test your individual and team skill against that of the general population. It wasn't available to "just anyone" in year one but you had a fair chance of facing teams that weren't always esports wannabes as they are a smaller percent of the player population.
Right now there's no reason why the first five games are even there. It's just there to make you feel like you wasted an hour of your life when you will probably get knocked out because 50% of 7-0 teams have to lose and 50% of 8-0 teams have to lose and 50% of 7-1 teams have to lose and 50% of 8-1 teams have to lose (if they even account for losses in the scorecard based matchmaking. It may be that 8-1 teams will be matched with 8-0 teams)
If trials were just those last three games I could understand and it would be fine. But don't sit there and waste my time for an hour before suddenly ramping up the difficulty to what trials is now "supposed to be".