Been there. Once I overwrote my SAL progress. I had to fill in everything from scratch. Good thing I did it at the start of the new page so I could just fill in all of the previous one.
That taught me how to easily fill large areas in PK... and to backup
Not a knitter (yet) and I just lurk here so don't put any weight on my opinion. I'm sharing my thoughts on the bot in general.
Personally I like the idea on paper. More exposure, more interaction, more anything. I love that. The bot reply won't be anything different than reminders to follow the rules on That Other Site.
My problem is mostly with the way Mastodon displays Lemmy content and I hope I'm wrong with this. I follow a couple of communities. I have a hard time even opening Lemmy links - could be an issue with Jerboa, Android or anywhere along the line. I usually notice a Lemmy post on Mastodon by people commenting on it and the community "boosting" the comments. If it works by adding hashtags to the post that might make it really good for discussion-based posts or commenting on general. Would it share the images as well? I don't know how exactly the bot works and the fediverse is still a bit murky to me on some topics.
Other than my little nitpicks I'm all for it. Overall it seems like a good addition.