Thanks James. The client had a JustHost account she wanted to use. I wanted to be a good citizen and let them know about the Softalicious problem, but the agent was clueless.
I installed Wordpress and used the plugin to switch it to ClassicPress, so no problem.
It might also be fruitful to explain that they can actually add this to Softaculous fairly easily, it’s just enabling a setting on their end. The support ticket resulting from your conversation would need to be escalated to engineering.
In that case it would probably be a good idea to do the part under “Step 1: Disconnect your current install” from https://www.classicpress.net/blog/classicpress-made-it-to-softaculous/. Otherwise, we have had some reports of Softaculous trying to handle WordPress updates and converting sites from ClassicPress back to WordPress.
However, there still remains a similar issue with the WordPress Toolkit that now ships with cPanel: cPanel's WP Toolkit messing with CP files. I’ve been onto cPanel several times but they don’t appear to be in any hurry to fix it unfortunately.