Re: Legacy stuff isn't the problem.
"Old stuff isn't inherently bad. If it still performs the job it was intended to do, let it."
But there is more to it than that...Legacy isn't demonised simply because 'shiny new expensive kit can do that 2 hour job in 1 hour and 59 minutes!!' it is demonised because it is usually flaky after a lot of use, it is usually insecure as it wasn't built with security in mind and assumed that nobody would be able to get through the front door of the network.
Your statement is akin to saying "DDT isn't inherently bad, if it still performs the job it was intended to do, let it" - i.e. It might still perform the job, but that doesn't mean it isn't dangerous and a very bad idea.