The lock is an exclamation mark on the direction this country is taking.
Meh. It all started when David Lee Roth left Van Halen. Think about it. This country has been sliding into the abyss since then. They changed the formula for Coke, Ernest Borgnine died, they stopped making Twinkies, and dagnabbit, they cancelled Manimal!
Change is inevitable. I'm not a huge fan of the lock, but it doesn't cause me any sort of distress beyond aesthetics. Despite an emotional preference for older blued Smiths, the modern ones run just fine for me. In fact, I have a 620 that outshoots all of my older specimens but one.
On the other hand, I've seen more issues with the Bangor Punta-era guns than any other group taken as a whole.