Is my dogs name blasphemous?

So my good boys name is Hades after the Greek God. Some bloke just bailed my husband and I up and told us that you shouldn’t make a dog after a god because it’s blasphemous. I’ve never heard this before and I was so confused. I was under the impression that blasphemy was a Christian concept but even so, after some googling it says that blasphemy is showing irreverence to a deity. Our heritage is Greek so aren’t we being the opposite of blasphemous by ensuring our culture is carried through?