For sure not all makers are bad about communication , though there are some that are.
If it is your main income and you are a full time maker , communication with waiting customers is key , especially if a quoted deadline has passed. I would not expect a weekly or monthly update , but if quoted a delivery time of 6 months , and 8 months has passed , a simple short update email to the customer would go a long way.
If many months have passed and you have not replied to that customers emails or contacted them , that is just poor business. When emails go unanswered , it does make the customer feel unimportant.
Think if you took your car to a one man auto repair shop , and were quote 2 weeks for your car to be done , 6 months later you still don't have your car with no update as to why , how would you feel ? A one man shop is a one man shop.
Dad had a one man shop auto repair business for as long as I can recall , he did all the book keeping , part running and wrenching. Some times he had to do some at night , sometimes on the weekend. It was his business and he treated it as such. If he told a customer their car would be done by 4 and it wasnt going to be , I remember him calling and letting them know why , and he would make arrangements to have it delivered to them when it was done.If it is a business , then it should be treated as such.
However many makers are part time , and trying to balance a full time job , family and knifemaking becomes sketchy. Job & family always comes first. Still some kind of communication when a deadline is missed should be given.
I don't consider a knife an essential item , so I am not about to let it ruin my view of custom knives if I get skipped , dropped off a list or get ignored. Custom knives to me are a luxury item and not a neccessity , so I spend my $$$ wisely.
To those makers who do take the time to communicate , please know that your customers appreciate it , and that customer will tell many others what a great buying experience they had.