If a presidential campaign wanted to avoid debates, waaaaaaaay more likely they'd do it by "negotiating" terms in bad faith and saying regrettably the other side just won't work with them.
Funny that Tri thinks that Biden would completely fall apart and expose himself in a debate yet Trump wouldn't take advantage of that.
Biden and his campaign is still a tradtional run campaign. They might not like a Biden's performance at a debate, but think it's still nesscary to carry out the motions. They did the March one with Sanders despite Biden already having a sizable lead over Sanders at this point. It wasn't until after more primaries and early to mid April you heard rumblings that the Biden camp didn't want to do more debates with Sanders and the justification was that the race was over, not because Biden thought he sucked at it. I think he sucks at it, but that's different from Biden's and his campaign internal view of things.
The reason why I think Trump wouldn't want to go for it because he can't be bothered. Look at him now, the one thing he's excited about are the
debates rallies, he just doesn't care about the debate and how they're structure. He never wants to share the stage, and in 2016, he only did it because it was a 'requirement'. If the last 4 years has proved, Trump has spent this presidency showing that he's not going to follow much of the traditions that has built over the last century. Also, for Trump to dunk on Biden, that would actually mean trying to some homework outside of the easy twitter shit. That dude has never done homework in his life, he's not going to start now.
Edit: One last thing, no way in hell are crowds going to be allowed at any of these debates, which is another reason why Trump won't go for it. It's clear at this point that he's willing for others to catch the novel coronavirus in order to see him, if he can't perform in a crowd, than he will have no interest.