As with music, and lyrical content - I think it's safe to say that you can get out of music what you want to get out of music.
Regardless of what the artist meant, if it means something different to you - that's a good thing.
That's how I am with public holidays.
I take a day off on Australia Day with pride. The issues of "It's more a NSW date" etc doesn't affect me. It's a day off for ME to celebrate the great country where I live.
As for Easter, and good Friday - I have the day off because, well, work is closed. I am not religious one bit, but the state of play is that our country's calendar system, work hours, et al, mean that many businesses are closed.
I'll have a BBQ on Good Friday - BUT - only if I was having one anyway.