Am i crazy?

I received a thank you note today in thw mail for a friends wedding back in thw summer.. its a thank you note off u order off line with a message typed in it. Not signed and nothing personal about it at all.. is it just me or is this rude?? (Maybe rude isnt the right word) but im not sure how i feel about this. I feel like they should be personalized at aleast hand written or something maybe have a signature or pur name on it?