The new value is ~4 times larger, and should be more than fine on any
reasonably modern machine. Alternatively, the default could be set to
t, as requested here:
https://lists.gnu.org/r/bug-gnu-emacs/2003-05/msg00114.html
* lisp/net/goto-addr.el (goto-address-fontify-maximum-size): Increase
default value from 30000 to 128 KiB.