It's just a reference list for the people who know half the features already. If you want a readable list, try the Table of Contents in "Perl new features".
that's not an excuse for poor formatting, especially when not breaking just a couple of formatting rules would make it a better reference, and doing a couple of more tweaks would make it an even better reference (e.g., you could easily see all experimental features with a simple tag in a column instead of having to reach the end of each description)