I had never heard of title tags being an important thing like that. It doesn't sound logical to copy the link text to the title attribute, surely the screen readers were already going to read the link text already ? 🤔
I can understand it making sense for links around images or single links without text, though I'm wondering how well the linked plugin does for that last case. If all it does is take the text around and use it as title, then it's not very clever. I'd rather leave this cleverness in the hands of the screen reader.
Seems totally feasible though. Lots of implementation options in Flarum. Either HTML modification during output, computation+saving in XLT in the post formatter, or altering the markdown/bbcode before saving to add the missing attributes or transform plain links into markdown/bbcode link markup.
