Sure, anyone can do whatever they want - it's all fiction!In Batman Ninja, modern-day Batman, allies & rogues get sent to Sengoku period Japan by Gorilla Grodd's time machine. That sort of time travel could be a useful tool to headcanon a modern-day Batman somehow becoming a 1983 Dark Knight Returns Batman or whatever.
In the DCAU and others, they got laser weapons as early as the 90s.Are their any other universes where the tech has advanced faster or slower?