- And what if my cryptocurrency updates automatically? would this be correct? why isn't bitcoin doing this? (to avoid that miners refuse the update, or even remove the reward for nodes that are outdated, could this work?)
Because it is useless to have a cryptocurrency that isn't open source. And if the code is open source, you can't force anyone to do anything.
If forks want to exist, they will exist, there is nothing you can do about it.