Absolutely. And the line numbers stuff was made it much easier to write code on these machines that lacked proper text editors, and made it easier to ship a min

Absolutely. And the line numbers stuff was made it much easier to write code on these machines that lacked proper text editors, and made it easier to ship a minimal programmable machine without including one. Plus it immediately and intuitively exposes the imperative sequential "turing tape" model of the computer to the user. "Do these sets of things, in sequence, now go back to this line, or forward to this, and do the things there" is far less abstract than "execute this function."