I would not complain if they outlawed these processions. You see them, but you don’t know who is being honored so, what’s the point?
To me, the “point” is to take a few moments to realize that what’s so damn important to me really isn’t. And, although I don’t know the decedent, others do and I hope to provide the same courtesy to them that I’d like for my own family and loved ones. People are foolishly self-interested and think their “errands” and such are somehow going to change the world or something.
At one time it was understood that someone had just left this life and, even if you don’t believe in an afterlife, respect for the dead and their family’s loss was enough to cause people to allow a funeral procession to pass unrestricted.
You don’t seem to understand the seriousness of death and the weight that it carries to a family. Maybe you’re young or maybe you just don’t get it yet, but you will eventually. It’s not a point of honoring someone’s achievements, but respecting the fact that someone’s life has ended and their time on Earth is over.