I guess, it depends on our definition, but for me its not a bad beat, when the equities were so close, when the chips went in. For sure its a wacky runout, but all runouts are baked into that 51/49 math, and apart from the emotional factor, it makes no difference, if the board runs out like this or a come common runout like 5429A giving the opponent a higher one pair.
Also while the jam is an ok play, its also so marginal, that he could have passed on the spot to secure a min-cash. With a little under 10BB, we should expect to have less fold
equity when rejamming and especially in a PKO, where people can win our bounty. And that definitely reduce the value of rejamming
hands like 66, which dont dominate any of our opponents calling range.