I hate to say it but this article sounds like it was written by your typical one trick pony, technology averse client services agency.
They are the last to adopt new things as they tend to be the lowest on the talent chain as meeting estimates, often via client coercion or moving goalposts, is much more important than successful solutions over the mid-ling term.
For anyone reading this that is part of that group, leave stuff like containers to outside organizations with stronger engineering talent and focus on what ultimate makes you money which is client networking and sales.
They are the last to adopt new things as they tend to be the lowest on the talent chain as meeting estimates, often via client coercion or moving goalposts, is much more important than successful solutions over the mid-ling term.
For anyone reading this that is part of that group, leave stuff like containers to outside organizations with stronger engineering talent and focus on what ultimate makes you money which is client networking and sales.