Well, I haven't heard of anyone employing physical violence over Biden's use of the word "fight." Maybe he said it in a way that was unambiguous and not in front of a large, riled up and armed mob. The context of the situation, the character of the people involved (including the constituency) and the overall rhetoric seem to be an important distinctions here.

Did you actually believe those were Biden's intentions?

Here's another quote from alex that invokes warfare:
"We declare 1776 against the new world order [...] We need to understand we're under attack, and we need to understand this is 21st-century warfare and get on a war-footing"

“We have only begun to resist the globalists. We have only begun our fight against their tyranny. They have tried to steal this election in front of everyone.”

“I don’t know how this is all going to end, but if they want to fight, they better believe they’ve got one,”