I hear you but they have been trying to shorten/speed up the games for a long time. The pandemic gave them an opening and they took it. And neither the players nor the owners like extra innings game (free labor, late nights, no TV viewers).
But I don't think they need an opening to have the NL DH, both sides want it. And this would ultimately please no one, fans who hate the DH wouldn't like this any better.
Even though, ironically, the thing I like about the 2nd base rule is it does create a bit of strategy and excitement.